800 Adjectives That Start with I | List with Definitions and Examples

Adjectives that start with I is widely used in daily life, like inspiring, influential. Therefore learning some adjectives starting with I will help a lot for daily communication.

To start a language, we first come to know about the basics of that language to learn it in a more vivid and descriptive way.

Similarly, In English language, we first learn about their basics including nouns, pronouns, verbs, adverb, adjectives….

Adjectives are commonly known as “descriptive words”. By adding some descriptive words starting with I, you’ll express yourself more accurately.

For example, if you add adjectives beginning with I, like “immature” to “She is a person” to make it “She is an immature person”, obviously you are being clearer.

Enjoy reading adjectives that start with I below with definitions, examples and synonyms.

Adjectives That Start with I – Full List (800 words)

What is the largest list of adjectives starting with I you’ve seen? I believe it won’t exceed ours. Because we have 800 I adjectives below for you. Isn’t it amazing?

  • Iambic
  • Iatrogenic
  • Iberian
  • Ibsenian
  • Icebound
  • Icelandic
  • Ichorous
  • Icky
  • Iconic
  • Iconoclastic
  • Icosahedral
  • Ictal
  • Icteric
  • Icterogenic
  • Ictic
  • Icy
  • Ideal
  • Idealised
  • Idealistic
  • Ideational
  • Idempotent
  • Identical
  • Identically
  • Identifiable
  • Ideographic
  • Ideologic
  • Ideological
  • Idiographic
  • Idiomatic
  • Idiomatical
  • Idiopathic
  • Idiosyncratic
  • Idiotic
  • Idle
  • Idolatrous
  • Idolised
  • Idyllic
  • Iffy
  • Igneous
  • Ignescent
  • Ignitable
  • Ignitible
  • Ignoble
  • Ignominious
  • Ignorable
  • Ignorant
  • Iliac
  • Ill
  • Illative
  • Illegal
  • Illegible
  • Illegitimate
  • Ill-fated
  • Illiberal
  • Illicit
  • Illimitable
  • Ill-informed
  • Illiterate
  • Ill-judged
  • Illogical
  • Illuminating
  • Illusional
  • Illusionary
  • Illusive
  • Illusory
  • Illustrative
  • Illustrious
  • Imaginable
  • Imaginarily
  • Imaginary
  • Imaginative
  • Imbalanced
  • Imbecile
  • Imbecilic
  • Imbricate
  • Imbricated
  • Imitation
  • Imitative
  • Immaculate
  • Immaculately
  • Immanent
  • Immaterial
  • Immature
  • Immeasurable
  • Immediate
  • Immemorial
  • Immense
  • Immensurable
  • Imminent
  • Immiscible
  • Immobile
  • Immoderate
  • Immodest
  • Immoral
  • Immortal
  • Immotile
  • Immovable
  • Immoveable
  • Immune
  • Immunised
  • Immunochemical
  • Immunocompetent
  • Immunocompromised
  • Immunodeficient
  • Immunogenic
  • Immunologic
  • Immunological
  • Immutable
  • Impaired
  • Impalpable
  • Imparipinnate
  • Impartial
  • Impassable
  • Impassioned
  • Impassive
  • Impatient
  • Impeccable
  • Impeccant
  • Impecunious
  • Impellent
  • Impendent
  • Impending
  • Impenetrable
  • Impenitent
  • Imperative
  • Imperceptible
  • Imperceptive
  • Imperfect
  • Imperfectible
  • Imperforate
  • Imperial
  • Imperialist
  • Imperialistic
  • Imperious
  • Imperishable
  • Impermanent
  • Impermeable
  • Impermissible
  • Impersonal
  • Impertinent
  • Imperturbable
  • Imperviable
  • Impervious
  • Impetiginous
  • Impetuous
  • Impious
  • Impish
  • Implacable
  • Implanted
  • Implausible
  • Implemental
  • Implicated
  • Implicational
  • Implicative
  • Implicit
  • Implike
  • Implosive
  • Impolite
  • Impolitic
  • Imponderable
  • Important
  • Imported
  • Importunate
  • Imposing
  • Impossible
  • Impotent
  • Impoverished
  • Impracticable
  • Impractical
  • Imprecise
  • Impregnable
  • Impressed
  • Impressible
  • Impressionable
  • Impressionist
  • Impressionistic
  • Impressive
  • Improbable
  • Impromptu
  • Improper
  • Improvable
  • Improved
  • Improvident
  • Improving
  • Improvised
  • Imprudent
  • Impudent
  • Impugnable
  • Impuissant
  • Impulsive
  • Impure
  • Imputable
  • Imputrescible
  • Inaccessible
  • Inaccurate
  • Inactive
  • Inadequate
  • Inadmissible
  • Inadvertent
  • Inadvisable
  • Inaesthetic
  • Inalienable
  • Inalterable
  • Inane
  • Inanimate
  • Inapplicable
  • Inapposite
  • Inappreciable
  • Inappropriate
  • Inapt
  • Inarguable
  • Inarticulate
  • Inartistic
  • Inattentive
  • Inaudible
  • Inaugural
  • Inauspicious
  • Inauthentic
  • Inboard
  • Inborn
  • Inbound
  • Inbred
  • Inbuilt
  • Incalculable
  • Incan
  • Incandescent
  • Incapable
  • Incarnate
  • Incased
  • Incautious
  • Incendiary
  • Incertain
  • Incessant
  • Incestuous
  • Inchoate
  • Inchoative
  • Incident
  • Incidental
  • Incipient
  • Incised
  • Incisive
  • Incitive
  • Inclement
  • Inclined
  • Included
  • Inclusive
  • Incognito
  • Incognizable
  • Incognizant
  • Incognoscible
  • Incoherent
  • Incombustible
  • Incoming
  • Incommodious
  • Incommunicado
  • Incommutable
  • Incomparable
  • Incompatible
  • Incompetent
  • Incomplete
  • Incomprehensible
  • Incomprehensive
  • Incomputable
  • Inconceivable
  • Inconclusive
  • Incongruent
  • Incongruous
  • Inconsequent
  • Inconsequential
  • Inconsiderable
  • Inconsiderate
  • Inconsistent
  • Inconsolable
  • Inconspicuous
  • Inconstant
  • Incontestable
  • Incontestible
  • Incontinent
  • Incontrovertible
  • Inconvenient
  • Inconvertible
  • Incorporate
  • Incorporated
  • Incorporating
  • Incorporative
  • Incorporeal
  • Incorrect
  • Incorrigible
  • Incorrupt
  • Incorruptible
  • Increasing
  • Incredible
  • Incredulous
  • Incremental
  • Incriminatory
  • Inculpable
  • Inculpative
  • Inculpatory
  • Incumbent
  • Incurable
  • Incurious
  • Incursive
  • Incurvate
  • Incurved
  • Indebted
  • Indecent
  • Indecipherable
  • Indecisive
  • Indecorous
  • Indefatigable
  • Indefeasible
  • Indefensible
  • Indefinable
  • Indefinite
  • Indehiscent
  • Indelible
  • Indelicate
  • Independent
  • Indescribable
  • Indestructible
  • Indeterminable
  • Indeterminate
  • Indexical
  • Indexless
  • Indian
  • Indicative
  • Indicatory
  • Indictable
  • Indie
  • Indifferent
  • Indigenous
  • Indigent
  • Indigestible
  • Indignant
  • Indigo
  • Indirect
  • Indiscernible
  • Indiscreet
  • Indiscrete
  • Indiscriminate
  • Indispensable
  • Indisposed
  • Indisputable
  • Indissoluble
  • Indistinct
  • Individual
  • Individualistic
  • Indivisible
  • Indocile
  • Indolent
  • Indomitable
  • Indonesian
  • Indoor
  • Indrawn
  • Indubitable
  • Inducive
  • Inductive
  • Indulgent
  • Indurate
  • Indusial
  • Industrial
  • Industrious
  • Indwelling
  • Inebriated
  • Inedible
  • Ineffable
  • Ineffective
  • Ineffectual
  • Inefficacious
  • Inefficient
  • Inelaborate
  • Inelastic
  • Inelegant
  • Ineligible
  • Ineloquent
  • Ineluctable
  • Inept
  • Inequitable
  • Ineradicable
  • Inerrable
  • Inerrant
  • Inert
  • Inescapable
  • Inessential
  • Inestimable
  • Inevitable
  • Inexact
  • Inexcusable
  • Inexhaustible
  • Inexorable
  • Inexpedient
  • Inexpensive
  • Inexperienced
  • Inexperient
  • Inexpert
  • Inexpiable
  • Inexplicable
  • Inexplicit
  • Inexpressible
  • Inexpressive
  • Inexpugnable
  • Inexpungeable
  • Inexpungible
  • Inextensible
  • Inextirpable
  • Inextricable
  • Infallible
  • Infamous
  • Infantile
  • Infatuated
  • Infeasible
  • Infected
  • Infectious
  • Infective
  • Infelicitous
  • Inferential
  • Inferior
  • Infernal
  • Infertile
  • Infinite
  • Infinitesimal
  • Infinitival
  • Infirm
  • Inflamed
  • Inflammable
  • Inflammatory
  • Inflatable
  • Inflated
  • Inflationary
  • Inflectional
  • Inflexible
  • Inflowing
  • Influent
  • Influential
  • Informal
  • Informally
  • Informational
  • Informative
  • Informatory
  • Informed
  • Infrahuman
  • Infrangible
  • Infrared
  • Infrasonic
  • Infrequent
  • Infuriated
  • Infuriating
  • Ingenious
  • Ingenuous
  • Inglorious
  • Ingrained
  • Ingratiating
  • Ingratiatory
  • Ingrowing
  • Ingrown
  • Inguinal
  • Inhabitable
  • Inhalant
  • Inharmonic
  • Inharmonious
  • Inherent
  • Inheritable
  • Inherited
  • Inhibited
  • Inhibitory
  • Inhomogeneous
  • Inhospitable
  • Inhuman
  • Inhumane
  • Inhumed
  • Inimical
  • Inimitable
  • Iniquitous
  • Initial
  • Initiative
  • Initiatory
  • Injectable
  • Injudicious
  • Injured
  • Injurious
  • Inky
  • Inlaid
  • Inland
  • Inmost
  • Innate
  • Inner
  • Innermost
  • Innocent
  • Innocuous
  • Innovational
  • Innovative
  • Innoxious
  • Innumerable
  • Innumerate
  • Innumerous
  • Inodorous
  • Inoffensive
  • Inoperable
  • Inoperative
  • Inopportune
  • Inordinate
  • Inorganic
  • Inpouring
  • Inquiring
  • Inquisitive
  • Inquisitorial
  • Inquisitory
  • Insalubrious
  • Insane
  • Insanitary
  • Insatiable
  • Insatiate
  • Inscriptive
  • Inscrutable
  • Insectan
  • Insecticidal
  • Insectivorous
  • Insecure
  • Insensate
  • Insensible
  • Insensitive
  • Insentient
  • Inseparable
  • Inshore
  • Inside
  • Insidious
  • Insightful
  • Insignificant
  • Insincere
  • Insipid
  • Insistent
  • Insolent
  • Insoluble
  • Insolvable
  • Insolvent
  • Insomniac
  • Insouciant
  • Inspirational
  • Inspiratory
  • Inspired
  • Inspiring
  • Inspiriting
  • Inst
  • Instant
  • Instantaneous
  • Instigative
  • Instinct
  • Instinctive
  • Instinctual
  • Institutional
  • Instructive
  • Instrumental
  • Insubordinate
  • Insubstantial
  • Insufferable
  • Insufficient
  • Insular
  • Insulting
  • Insuperable
  • Insupportable
  • Insurable
  • Insurgent
  • Insurmountable
  • Insusceptible
  • Intact
  • Intangible
  • Integral
  • Integrated
  • Integrative
  • Integumental
  • Integumentary
  • Intellectual
  • Intelligent
  • Intelligible
  • Intemperate
  • Intended
  • Intense
  • Intensional
  • Intensive
  • Intent
  • Intentional
  • Interactive
  • Interbred
  • Intercalary
  • Intercellular
  • Interchangeable
  • Interchurch
  • Intercostal
  • Intercrossed
  • Interdepartmental
  • Interdependent
  • Interdisciplinary
  • Interested
  • Interesting
  • Interfacial
  • Interfaith
  • Interfering
  • Intergalactic
  • Interim
  • Interior
  • Interlacing
  • Interlineal
  • Interlinear
  • Interlinking
  • Interlobular
  • Interlocking
  • Interlocutory
  • Intermediate
  • Intermeshed
  • Interminable
  • Intermittent
  • Internal
  • International
  • Internecine
  • Interoceptive
  • Interoperable
  • Interpersonal
  • Interpretable
  • Interpretative
  • Interpretive
  • Interracial
  • Interrelated
  • Interrogative
  • Interrogatory
  • Interschool
  • Intersectant
  • Intersexual
  • Interspecies
  • Interspecific
  • Interstate
  • Interstellar
  • Interstitial
  • Intertidal
  • Intertribal
  • Intestate
  • Intestinal
  • Intimal
  • Intimate
  • Intimidating
  • Intolerable
  • Intolerant
  • Intoned
  • Intoxicant
  • Intoxicated
  • Intracellular
  • Intracerebral
  • Intracranial
  • Intractable
  • Intradermal
  • Intradermic
  • Intragroup
  • Intralobular
  • Intramural
  • Intramuscular
  • Intransigent
  • Intransitive
  • Intraspecies
  • Intraspecific
  • Intrastate
  • Intrauterine
  • Intravenous
  • Intrepid
  • Intricate
  • Intrigued
  • Intriguing
  • Intrinsic
  • Intrinsical
  • Introductory
  • Introjected
  • Introspective
  • Introuvable
  • Introversive
  • Introverted
  • Introvertish
  • Introvertive
  • Intrusive
  • Intuitionist
  • Intuitive
  • Intumescent
  • Inured
  • Inutile
  • Invalid
  • Invaluable
  • Invariable
  • Invariant
  • Invasive
  • Inventive
  • Inverse
  • Invertebrate
  • Invertible
  • Investigatory
  • Inveterate
  • Invidious
  • Invigorating
  • Invincible
  • Inviolable
  • Inviolate
  • Invisible
  • Invitational
  • Invitatory
  • Invited
  • Inviting
  • Involucrate
  • Involuntary
  • Involute
  • Involved
  • Invulnerable
  • Inward
  • Inwards
  • Inwrought
  • Iodinated
  • Iodinating
  • Iodized
  • Ionian
  • Ionic
  • Ionized
  • Ipsilateral
  • Iraki
  • Iranian
  • Iraqi
  • Irascible
  • Irate
  • Irenic
  • Iridaceous
  • Iridescent
  • Iridic
  • Irish
  • Iritic
  • Irksome
  • Iron
  • Ironclad
  • Ironed
  • Ironic
  • Ironical
  • Ironlike
  • Ironshod
  • Irrational
  • Irreclaimable
  • Irreconcilable
  • Irrecoverable
  • Irredeemable
  • Irreducible
  • Irrefutable
  • Irregular
  • Irrelative
  • Irrelevant
  • Irreligious
  • Irremediable
  • Irremovable
  • Irreparable
  • Irreplaceable
  • Irrepressible
  • Irresistible
  • Irresolute
  • Irresponsible
  • Irretrievable
  • Irretrievably
  • Irreverent
  • Irreversible
  • Irrevocable
  • Irrevokable
  • Irritable
  • Irritated
  • Irritating
  • Irritative
  • Irruptive
  • Ischaemic
  • Ischemic
  • Isentropic
  • Islamic
  • Ismaili
  • Isobilateral
  • Isochronal
  • Isochronous
  • Isoclinal
  • Isoclinic
  • Isocyclic
  • Isogonic
  • Isolable
  • Isolated
  • Isomeric
  • Isometric
  • Isometrical
  • Isomorphic
  • Isomorphous
  • Isopteran
  • Isosceles
  • Isosmotic
  • Isothermal
  • Isothermic
  • Isotonic
  • Isotopic
  • Isotropic
  • Isotropous
  • Italian
  • Italic
  • Itchy
  • Iterative
  • Itinerant
  • Ivied

Adjectives That Start with I – with Definitions and Examples

In case you forget the meaning and usage of adjectives beginning with I, we listed their definitions and examples below for your easy checking.

  • Iconic

Definition: very famous or popular, especially being considered to represent particular opinions or a particular time

Example: The gunfight is the single most iconic image of the Wild West.

  • Ideal

Definition: perfect, or the best possible

Example: She’s the ideal person for the job.

  • Idealized

Definition: involving thinking of or representing someone or something as better than that person or thing really is

Example: She became an icon and an idealized symbol of women’s achievement.

  • Idealistic

Definition: believing that very good things can be achieved, often when this does not seem likely to other people

Example: She support a number of idealistic causes.

  • Ideational

Definition: relating to the formation of ideas or concepts

Example: Policy has been shaped by both material and ideational factors.

  • Identical

Definition: exactly the same, or very similar

Example: I’ve got three identical blue suits.

  • Identifiable

Definition: able to be recognized; distinguishable

Example: There are no easily identifiable features on the shoreline.

  • Ideological

Definition: based on or relating to a particular set of ideas or beliefs

Example: There are some fairly profound ideological disagreements within the movement.

  • Idiographic

Definition: pertaining to or involving the study or explication of individual cases or events

Example: A quantitative study was followed by qualitative research that was aimed at gaining an ideographic perspective.

  • Idiomatic

Definition: using, containing, or denoting expressions that are natural to a native speaker

Example: He spoke fluent, idiomatic English.

  • Idiopathic

Definition: relating to or denoting any disease or medical condition has no known cause

Example: Idiopathic pulmonary fibrosis is a lung condition which causes scaring of the lungs.

  • Idiotic

Definition: very stupid

Example: I was able to hum its idiotic theme tune.

  • Idle

Definition: without purpose or effect; pointless

Example: He did not want to waste valuable time in idle chatter.

  • Idolatrous

Definition: of or having the nature of idolatry

Example: Pele in idolatrous times was the dreaded goddess of Kilauea.

  • Idolized

Definition: admire, revere, or love greatly or excessively

Example: He was idolized and demonized as few other rulers have been, and our image of his character is confused by the hatred or goodwill of the parties involved.

  • Idyllic

Definition: pleasing or picturesque in nature simplicity

Example: It appears to be an idyllic domestic set-up.

  • Iffy

Definition: of doubtful quality or legality

Example: A good wine merchant will change the iffy bottles for sound ones.

  • Igneous

Definition: describes rocks made from magma that has cooled and become solid

Example: It used to be found in fissure veins in the extrusive igneous rhyolite rock.

  • Ignoble

Definition: of low grade or quality; inferior

Example: After having looked into other avenues for a solution, they finally embark upon an ignoble bank robbery.

  • Ignominious

Definition: deserving or causing public disgrace or shame.

Example: No other party risked ignominious defeat.

  • Ignorant

Definition: lacking knowledge or awareness in general; uneducated or unsophisticated

Example: He was told constantly that he was ignorant and stupid.

  • Iliac

Definition: relating to the ilium (= the widest of the three bones that form the pelvis)

Example: The surgical implantation of iliac screws has been used successfully to correct spinal deformities.

  • Ill

Definition: bad

Example: Did you experience any ill effects from the treatment

  • Illegal

Definition: not allow by law

Example: Cocaine, LSD, and heroine are all illegal drugs.

  • Illegible

Definition: not clear enough to be read

Example: His handwriting is totally illegible.

  • Illegitimate

Definition: used to describe activities and institutions that are not in accordance with the law and with accepted standards of what is right

Example: They represented a ruthless and illegitimate regime that could not remain forever.

  • Ill-fated

Definition: unlucky and unsuccessful, often resulting in death

Example: The ill-fated aircraft later crashed into the hillside.

  • Illiberal

Definition: opposed to liberal principles; restricting freedom of thought or behavior

Example: Real regulation of internship would involve dictatorial and illiberal measures and a lot of policing.

  • Illicit

Definition: an activity or substance that is not allowed by law or the social customs of a country

Example: Dante clearly condemns illicit love.

  • Illimitable

Definition: limitless; boundless

Example: However, a hardware machine and its software program can be designed to perform an almost illimitable number of abstract and physical task.

  • Illiterate

Definition: unable to read or write

Example: His parents were illiterate.

  • Ill-judged

Definition: rash; ill-advised

Example: He has made a whole list of ill-judged comments down the years.

  • Illogical

Definition: not reasonable, wise, or practical, usually because directed by the emotions rather than by careful thought

Example: It is an illogical statement, because if one part is true, then the other must be false.

  • Illuminating

Definition: helping to clarify or explain something

Example: It’s been a very illuminating discussion.

  • Illusionary

Definition: of, pertaining to, or characterized by illusions; deceptive; misleading

Example: A spell that conjures up a banquet, or that confers invisibility on the magician, would be examples of illusionary magic.

  • Illusive

Definition: illusory; unreal

Example: Physically, he’s illusive and dreamy.

  • Illusory

Definition: based on producing illusion

Example: Linda started an illusory friendship with her rival as part of her plan to destroy the girl’s reputation.

  • Illustrative

Definition: serving as an example or explanation

Example: This timetable is provided for illustrative purposes only.

  • Illustrious

Definition: famous, well respected, and admired

Example: She comes from an illustrious political family that includes two former Cabinet ministers.

  • Imaginable

Definition: something that is extreme in some way

Example: He could not disguise that he had had the worst imaginable day for any minister.

  • Imaginary

Definition: existing only in the imagination

Example: Chris had imaginary conversations with her.

  • Imaginative

Definition: new, original, and clever

Example: The architects have made imaginative use of glass and transparent plastics.

  • Imbalanced

Definition: unevenly or unfairly arranged

Example: Today’s figures show a deeply imbalanced economy.

  • Imbecile

Definition: stupid; idiotic

Example: Try not to make imbecile remarks.

  • Imbecilic

Definition: extremely stupid

Example: She looked at me with an imbecilic grin.

  • Imbricate

Definition: (of scales, sepals, plates, etc.) having adjacent edges overlapping

Example: A section is given of the bud of Antirrhinum majus, showing the imbricate spiral arrangement.

  • Imitation

Definition: made to look like something else

Example: It’s not real silk – It’s just imitation.

  • Imitative

Definition: copying or following a model or example

Example: The derring-do of our film heroes inspired us to imitative feats.

  • Immaculate

Definition: perfectly clean or tidy

Example: The whole house was immaculate.

  • Immanent

Definition: (of God) permanently pervading and sustaining the universe

Example: God is immanent in the world.

  • Immaterial

Definition: spiritual, rather than physical

Example: We have immaterial souls.

  • Immature

Definition: something or someone that is not yet completely grown or fully developed

Example: The birds were in immature plumage.

  • Immeasurable

Definition: so large or great that it cannot be measured or known exactly

Example: Her movies had an immeasurable effect on a generation of Americans.

  • Immediate

Definition: occurring or done at once; instant

Example: The authorities took no immediate action.

  • Immemorial

Definition: existing or traditional for an extremely long time

Example: She said it was the immemorial custom of the villagers to have a feast after the harvesting.

  • Immense

Definition: extremely large in size or degree

Example: They spent an immense amount of time getting the engine into perfect condition.

  • Imminent

Definition: about to happen

Example: They were in imminent danger of being swept away.

  • Immiscible

Definition: (of two or more liquids) incapable of being mixed to form a homogeneous substance

Example: Oil and water are immiscible.

  • Immoderate

Definition: not sensible or restrained; excessive

Example: Ever since Frederick went to the casino in Las Vegas, he began an immoderate gambling hobby and can always be seen there.

  • Immodest

Definition: having too high an opinion of yourself

Example: He makes these immodest statements of his own brilliance.

  • Immoral

Definition: morally wrong, or outside society’s standards of acceptable, honest, and moral behaviour

Example: It’s an immoral tax, because the poor will pay relatively more.

  • Immortal

Definition: living or lasting for ever

Example: The priest said he was endangering his immortal soul.

  • Immovable

Definition: not able to be moved

Example: All immovable objects have graffiti sprayed on them.

  • Immunological

Definition: relating to the structure and function of the immune system

Example: A monocyte is a white blood cell that can provide immunological defences against many infectious organisms.

  • Immutable

Definition: not changing, or unable to be changed

Example: Some people regard grammar as an immutable set of rules.

  • Impaired

Definition: damaged in a way that makes something less effective

Example: The medication is associated with impaired motor skills.

  • Impartial

Definition: able to judge or consider something fairly without allowing your own interest to influence you

Example: The jury has to give an impartial verdict after listening to all of the evidence.

  • Impassable

Definition: (of a road or path) cannot be travelled on because of bad weather conditions or because it is blocked

Example: Many roads were flooded and impassable following the storm.

  • Impassioned

Definition: filled with or showing great emotion

Example: She made an impassioned plea for help.

  • Impassive

Definition: not showing or feeling any emotion

Example: Nick kept his face impassive but his mind was racing.

  • Impatient

Definition: having or showing a tendency to be quickly irritated or provoked

Example: An impatient motorist blaring his horn.

  • Impending

Definition: (of an event regarded as threatening or significant) about to happen; forthcoming

Example: The author had returned to his country ahead of the impending war.

  • Impenetrable

Definition: impossible to understand

Example: Her expressions was impenetrable.

  • Imperceptible

Definition: so slight, gradual, or subtle as not to be perceived

Example: His head moved in an almost imperceptible nod.

  • Imperceptive

Definition: lacking in perception or insight

Example: He dismissed the remark as juvenile and imperceptive.

  • Imperfect

Definition: damaged, containing problems, or not having something

Example: We’re living in an imperfect world.

  • Imperial

Definition: belonging to or relating to an empire or the person or country that rules it

Example: The imperial guards stormed the palace.

  • Imperious

Definition: unpleasantly proud and expecting to be obeyed

Example: She sent them away with an imperious wave of the hand.

  • Impermanent

Definition: not permanent

Example: Life has value precisely because it is transient and impermanent.

  • Impermeable

Definition: something that does not allow fluid to pass through it

Example: The canoe is made from an impermeable wood.

  • Impermissible

Definition: not permitted or allowed

Example: Their refusal to discuss the issue is impermissible.

  • Impersonal

Definition: not existing as a person

Example: He gradually came to believe in an impersonal God.

  • Impertinent

Definition: not showing enough respect; rude

Example: Don’t be impertinent – you’re in no position to tell your boss what to do.

  • Impervious

Definition: not allowing liquid to go through

Example: How does glue bond with impervious substances like glass and metal?

  • Impetuous

Definition: acting or done quickly and without thought or care

Example: She might live to rue this impetuous decision.

  • Impious

Definition: lacking piety or reverence for a god; ungodly

Example: I need to wash the taste of these impious demands out of my mouth.

  • Impish

Definition: inclined to do slightly naughty things for fun; mischievous

Example: He had an impish look about him.

  • Implacable

Definition: unable to be appeased or placated

Example: he was an implacable enemy of Ted’s.

  • Implausible

Definition: (of an argument or statement) not seeming reasonable or probable; failing to convince

Example: This is a blatantly implausible claim.

  • Implicit

Definition: suggested but not communicated directly

Example: He interpreted her comments as an implicit criticism of the government.

  • Impolite

Definition: not having or showing good manners; rude

Example: It would have been impolite to refuse.

  • Important

Definition: having great effect or influence

Example: He was one of the most important writers of that period.

  • Importunate

Definition: persistent, especially to the point of annoyance

Example: My mother left her husband because he was an importunate man who treated her like an unpaid servant.

  • Imposing

Definition: having an appearance that looks important or causes admiration

Example: He was an imposing figure on stage.

  • Impossible

Definition: very difficult to deal with

Example: She was in an impossible situation.

  • Impotent

Definition: unable to take effective action; helpless or powerless

Example: He was seized with an impotent anger.

  • Impoverished

Definition: made weaker or worse in quality

Example: He warned that the breakdown of the family unit would lead to an impoverished society.

  • Imprecise

Definition: lacking exactness and accuracy of expression or detail

Example: The witness could give only vague and imprecise descriptions.

  • Impressed

Definition: (of a mark) applied to something using pressure

Example: The saddle was handsomely decorated with an impressed design of leaves and flowers.

  • Impressive

Definition: evoking admiration through size, quality, or skill; grand, imposing, or awesome

Example: There are some very impressive buildings in the town.

  • Improbable

Definition: unexpected and apparently inauthentic

Example: The characters have improbable names.

  • Improper

Definition: dishonest and against a law or a rule

Example: the governor has denied making improper use of state money.

  • Improved

Definition: better than before

Example: Highlights of the package include a wage increase, improved health care benefits and better tuition scholarships.

  • Improvident

Definition: not having or showing foresight; spendthrift or thoughtless

Example: Jessie handles all of the household financial matters because of his wife’s improvident spending habits.

  • Improvised

Definition: done or made using whatever is available; makeshift.

Example: We slept on improvised beds.

  • Impulsive

Definition: acting or done suddenly without any planning or consideration of the results

Example: She’s an impulsive shopper and often buys things she doesn’t need.

  • Impure

Definition: involving sexual thoughts or behaviour that are wrong or not moral

Example: She was accused of having impure thoughts about her male students.

  • Inaccessible

Definition: difficult or impossible to reach

Example: The place is inaccessible except by trail.

  • Inaccurate

Definition: not accurate or correct

Example: The reports were based on inaccurate information.

  • Inactive

Definition: doing nothing

Example: I am an inactive player because I always sit on the bench.

  • Inadequate

Definition: not good enough or too low quality

Example: This work is woefully inadequate – you’ll have to do it again.

  • Inadmissible

Definition: evidence that cannot be used in a court of law

Example: The judge ruled that the evidence was inadmissible.

  • Inadvertent

Definition: not intentional

Example: All authors need to be wary of inadvertent copying of other people’s ideas.

  • Inalienable

Definition: not subject to being taken away from or given away by the possessor

Example: The shareholders have the inalienable right to dismiss directors.

  • Inane

Definition: extremely silly or with no real meaning or importance

Example: He’s always making inane remarks.

  • Inanimate

Definition: having none of the characteristics of life that an animal or plant has

Example: He looks at me as if I’m an inanimate object.

  • Inapposite

Definition: out of place; inappropriate

Example: The Shakespearean allusions are inapposite.

  • Inappropriate

Definition: not suitable or proper in the circumstances

Example: There are penalties for inappropriate behaviour.

  • Inapt

Definition: not apt; not suitable; inappropriate

Example: The inapt investigation led by the police, as well as the prosecutor, has been criticized repeatedly.

  • Inarticulate

Definition: unable to express feeling or ideas in words, or communicated in a way that is difficult to understand

Example: He refers to them as inarticulate mountain people.

  • Inartistic

Definition: having or showing a lack of skill or talent in art

Example: Amplification is not necessarily a bad or inartistic phenomenon.

  • Inattentive

Definition: failing to attend to the comfort or wishes of others

Example: I was disappointed by the food and the inattentive service.

  • Inaudible

Definition: unable to be heard

Example: Before Dean could answer, there was an almost inaudible knock at the door.

  • Inauspicious

Definition: unlucky

Example: This is the inauspicious star of disaster.

  • Inauthentic

Definition: not in fact what it is said to be

Example: He criticized the restaurant’s inauthentic food.

  • Inboard

Definition: situated on, towards, or near the centre of a ship or aircraft

Example: The inboard ailerons on the wings were dead.

  • Inborn

Definition: used to refer to a mental or physical characteristic that someone has from birth

Example: She seems to have an inborn talent for physic.

  • Inbound

Definition: travelling towards a particular point

Example: We expect delays to both inbound and outbound trains.

  • Inbred

Definition: produced by inbreeding

Example: Inbred dogs will be more likely to have some genetic maladies.

  • Inbuilt

Definition: built-in

Example: The phone comes with 8 GB inbuilt memory.

  • Incalculable

Definition: not able to be calculated or estimated

Example: Amy saw the devastating death of her son as having an incalculable effect that few would ever understand. 

  • Incapable

Definition: unable to do something

Example: She’s incapable of hurting a fly.

  • Incessant

Definition: (esp. of something unpleasant) never stopping

Example: The region endured weeks of incessant rain.

  • Incestuous

Involving incest

Example: The film is about Auteil’s incestuous love for his sister.

  • Incidental

Definition: less important than the thing something is connected with or part of

Example: try not to be distracted by incidental details.

  • Incipient

Definition: just beginning or just coming into existence

Example: He has a black mustache and an incipient potbelly.

  • Incisive

Definition: (of a person or mental process) intelligently analytical and clear-thinking.

Example: She was an incisive critic.

  • Inclement

Definition: (of the weather) unpleasantly cold or wet

Example: Walkers should be prepared for inclement weather.

  • Inclusive

Definition: including all the services or items normally expected or required

Example: Menus stating fully inclusive prices.

  • Incoherent

Definition: (of spoken or written language) expressed in an incomprehensible or confusing way; unclear.

Example: He screamed some incoherent threat.

  • Incoming

Definition: arriving at, coming into, or entering a place

Example: Incoming flights are being delayed because of bad weather.

  • Incompatible

Definition: not able to work with other equipment

Example: The file was in an incompatible format and could not be printed.

  • Incompetent

Definition: not having the ability to do something as it should be done

Example: He has described the government as corrupt and incompetent.

  • Incomplete

Definition: not having some parts, or not finished

Example: The building is still incomplete.

  • Incomprehensible

Definition: not able to be understood; not intelligible

Example: She grunted some incomprehensible reply.

  • Inconceivable

Definition: not capable of being imagined or grasped mentally; unbelievable

Example: They behaved with inconceivable cruelty.

  • Inconclusive

Definition: not giving or having a result or decision

Example: We can organize the entire wedding for one inclusive price.

  • Incontestable

Definition: impossible to question because of being obviously true

Example: The medical tests were inconclusive, and will need to be repeated.

  • Inconsiderable

Definition: very small and therefore not important or not worth considering

Example: He inherited a not inconsiderable amount.

  • Incontrovertible

Definition: impossible to double because of being obviously true

Example: her logic is utterly incontrovertible.

  • Inconvenient

Definition: not inconvenient

Example: He scheduled the meeting for an inconvenient time, and few people could attend.

  • Inconvertible

Definition: unable to be changed into gold, another currency, or another type of investment

Example: A large part if this amount was locked up in inconvertible securities.

  • Incorporeal

Definition: not having a physical body but a spiritual form

Example: In the film, the house was visited by a strange incorporeal being.

  • Incorrect

Definition: not in accordance with fact; wrong

Example: The doctor gave you incorrect advice.

  • Incorrigible

Definition: (of a person or their behaviour) not able to be changed or reformed

Example: She’s an incorrigible flirt.

  • Incredible

Definition: impossible, or very difficult, to believe

Example: The latest missiles can be fired with incredible accuracy.

  • Incredulous

Definition: not wanting or not able to believe something, and usually showing this

Example: A few incredulous spectators watched on as Pateron, ranked 23rd in the world, beat the champion.

  • Incremental

Definition: in a series of amount

Example: Most research proceeds by small incremental advances.

  • Incumbent

Definition: (of an official or regime) currently holding office

Example: The incumbent President was defeated.

  • Incurable

Definition: not able to be cured

Example: Parkinson’s disease is a debilitating and incurable disease of the nervous system.

  • Indebted

Definition: owing money

Example: The company is heavily indebted.

  • Indecent

Definition: not appropriate or fitting

Example: They leaped on the suggestion with indecent haste.

  • Indecisive

Definition: not good at making decisions

Example: He is widely thought to be an indecisive leader.

  • Indefensible

Definition: too bad to be protected from criticism

Example: The war is morally indefensible.

  • Indefinite

Definition: lasting for an unknown or unstated length of time

Example: They may face indefinite detention.

  • Indehiscent

Definition: not dehiscent; not opening at maturity to discharge its seeds

Example: The fruits of the species are indehiscent, globulous and berry-shaped.

  • Indelible

Definition: not able to be forgotten

Example: The story made an indelible impression on me.

  • Indelicate

Definition: showing a lack of awareness of socially correct behavior

Example: There was an embarrassed silence after his indelicate remark about her age.

  • Independent

Definition: a politician does not agree or vote with any particular political party

Example: An independent adviser has been brought in to conciliate between the two sides involved in the conflict.

  • Indie

Definition: (of music or films) made by small companies that are not owned by larger companies

Example: The popularity of indie bands has soared in recent years.

  • Indigenous

Definition: naturally existing in a place or country rather than arriving from another place

Example: So, who are the indigenous people of this land?

  • Indigestible

Definition: indigestible food is difficult or impossible for the stomach to break down

Example: Beans have some indigestible carbohydrates that can give you wind.

  • Indignant

Definition: angry because of something that is wrong or not fair

Example: She wrote an indignant letter to the paper complaining about the council’s action.

  • Indirect

Definition: not directly caused by or resulting from something

Example: Full employment would have an indirect effect on wage levels.

  • Indiscreet

Definition: having, showing, or proceeding from too great a readiness to reveal things that should remain private or secret

Example: They have been embarrassed by indiscreet friends.

  • Indiscriminate

Definition: done at random or without careful judgement

Example: The indiscriminate use of antibiotics can cause problems.

  • Indispensable

Definition: something or someone that is good or important you could not manage without it, him or her

Example: This book is an indispensable resource for researchers.

  • Indisposed

Definition: slightly unwell

Example: My mother is indisposed.

  • Indisputable

Definition: unable to be challenged or denied

Example: The indisputable fact is that computers carry out our logical operations.

  • Indistinct

Definition: not clear or sharply defined.

Example: His speech was slurred and indistinct.

  • Individualistic

Definition: relating to one particular person rather than a group of society, or relating to someone who is different or original

Example: Contemporary art is highly individualistic.

  • Indivisible

Definition: not able to be separated from something else or into different parts

Example: He regards e-commerce as an indivisible part of modern retail.

  • Indolent

Definition: without real interest or effort; lazy

Example: I was an indolent creature who could not imagine action.

  • Indomitable

Definition: impossible to subdue or defeat

Example: His reminiscences of his childhood and his indomitable mother were genuinely touching.

  • Indoor

Definition: happening, used, or existing inside a building

Example: The indoor flowers market is a big tourist attraction.

  • Indrawn

Definition: (of breath) taken in

Example: She heard the swift indrawn breath of surprise.

  • Indusial

Definition: very great in extent or amount

Example: We are seeing tax avoidance on an industrial scale

  • Industrious

Definition: diligent and hard-working

Example: An industrious people striving to make their country prosperous.

  • Indwelling

Definition: relating to a device that is left inside the body, for example a catheter (= a long, thin tube used to take liquids out of the body)

Example: Indwelling catheters are used during labour following epidural anesthesia.

  • Inedible

Definition: not suitable as food

Example: The meat was inedible.

  • Ineffective

Definition: not producing the effects or results that are wanted

Example: They made an ineffective attempt to get the rules changed.

  • Inept

Definition: not skilled or effective

Example: He was criticized for his inept handling of the situation.

  • Inelegant

Definition: having or showing a lack of physical grace, elegance, or refinement

Example: He came skidding to an inelegant halt.

  • Ineligible

Definition: not allowed to do or receive something because you do not meet certain conditions

Example: The state has made a reasonable effort to help purge ineligible voters from election rolls.

  • Inequitable

Definition: unfair; unjust

Example: The present taxes are inequitable.

  • Ineradicable

Definition: not able to be removed

Example: Some experiences in early life have ineradicable effects.

  • Inerrant

Definition: incapable of being wrong

Example: They believed in an inerrant scripture.

  • Inert

Definition: not moving or not able to move

Example: The inert figure of a man could be seen lying in the front of the car.

  • Inescapable

Definition: impossible to avoid or not to accept

Example: The evidence points to the inescapable conclusion that he is guilty of the crime.

  • Inestimable

Definition: extremely great, or too great to be described or expressed exactly

Example: The medical importance of this discovery is of inestimable value.

  • Inevitable

Definition: certain to happen and unable to be avoided or prevented

Example: The accident was the inevitable outcome of carelessness.

  • Inexact

Definition: not known in detail or not completely accurate

Example: Economics is an inexact science.

  • Inexhaustible

Definition: existing in very great amounts that will never be finished

Example: There seemed to be an inexhaustible supply of champagne at the wedding.

  • Inexorable

Definition: continuing without any possibility of being stopped

Example: Aging is an inexorable process.

  • Inexpensive

Definition: not costing a lot of money

Example: It’s an inexpensive perfume.

  • Inexperienced

Definition: having little knowledge or experience

Example: They are young inexperienced parents and need support.

  • Inexpert

Definition: having little skill

Example: She had made an inexpert attempt to repair the car.

  • Inexplicable

Definition: unable to be explained or understood

Example: For some inexplicable reason, he’s decided to cancel the project.

  • Inexpressible

Definition: (of a feeling) too strong to be described or conveyed in words

Example: The news filled him with inexpressible delight.

Positive Adjectives That Start with I to Describe a Person

Adjectives that start with I to describe a person are often used in formal writings, like “Ideal”, “Independent”. Can you think of more from your favorite books?

1. Ideal

Definitions: model, exemplary

Synonyms: classical, supreme, flawless, consummate

Example: Shakespeare is my ideal poet and writer.

2. Imaginative

Definition:  creative or artistic

Synonyms: fantastic, ingenious, dreamy, vivid

Example: Nothing was like what was in her imaginative mind.

3. Inspiring

Definition: encouraging or rousing

Synonyms: animating, exalting, motivating, stimulating

Example: He has an inspiring personality for the unbelievers in the opponent party.

4. Intimate

Definition: devoted or loving

Synonyms: friendly, bosom, affectionate, dearest

Example: He was talking to a stranger; being intimate.

5. Individual

Definition: distinct or alone

Synonyms: definite, particular, indivisible, lone

Example: They did all their work individually, not in a group or with a team. They did a great job.

6. Independent

Definition: liberal or free

Synonyms: absolute, on one’s own, self-determining, autonomous

Example: She came to me for an independent piece of advice.

7. Influential

Definition: something effective or being powerful.

Synonyms: dominant, strong, controlling

Example: He introduced everyone with influential facts about their civilization.

8. Impassioned:

Definition: showing great spirit or emotion

Synonyms: wholehearted, heartfelt, emotional, earnest

Example: She is still impassioned about her book to write more positive things…

9. Impious

Definition: not religious

Synonyms: contrary, agnostic, deceitful, godless

Example: Peter is an impious rich man.

10. Indulgent

Definition: able to live with; lenient

Synonyms: charitable, compliant, considerate, fond

Example: He was considered to be very indulgent and kind towards everyone.

11. Infinite

Definition: without end or limit; limitless

Synonyms: eternal, everlasting, enormous, immense

Example: Everything has an end or you can say all is vanity except that infinite sky.

12. Intimate

Definition:  friendly or devoted

Synonyms: bosom, close, affectionate, faithful

Example: Anna is my intimate friend and we have been together for the last eight years.

13. Intransitive

Definition: not talking in a direct object

Synonyms: verb, intransitive verb form

Example: You will find some verbs that may be transitive or intransitive according to the context of the sentence.

Positive Adjectives That Start with I to Describe an Event

To describe an event in your writing, use descriptive words that start with I below and they will make your work stand out.

1. Incentive

Definition: inducement or consideration

Synonyms: stimulation, purpose, ground, excuse

Example: They give me a great incentive up on hard work.

2. Important

Definition: something or someone valuable

Synonyms: considerable, foremost, extensive, necessary

Example: I missed an important meeting, shit!

3. Interesting

Definition:  entertaining or attractive

Synonyms: exotic, captivating, curious, elegant

Example: Today’s get-together was very interesting.

4. Illicit

Definition: something illegal

Synonyms: contrary to law, black-market, criminal

Example: He is doing illicit trade with his business partner for the last few years.

5. Intellectual

Definition: very smart

Synonyms: bookish, brainy, cerebral, creative

Example: She got an intellectual scholarship for her brilliant performance.

6. Immediate

Definition: in a hurry, without delay

Synonyms: instant, current, at once, prompt

Example: Beware of making immediate decisions, keep calm and have patience.

7. Impermanent

Definition: temporary

Synonyms: fleeting, transient, passing, ephemeral

Example: This site also includes impermanent information and worthless.

8. Inclusive

Definition: all together or comprehensive

Synonyms: all the options, overall, broad, whole

Example: The fastest train in china contains an inclusive speed of 35km per hour.

9. Italian

Definition: native or related to Italy; italic

Synonyms: roman, Sicilian, Tuscan, Latin

Example: In Italian, sentence structure is exactly the same as English sentence structure.

10. Introductory

Definition: leading or initial

Synonyms: earliest, starting, opening, precursive

Example: You have to follow this with an introductory manual of inventory.

Positive Adjectives That Start with I to Describe a Place

What is the best place you’ve ever been to? Can you give a detailed description with any of adjectives that start with the letter I below?

1. Identifiable

Definition: recognizable

Synonyms: determinate, described, distinguished

Example: The criminals are identifiable by this person because he saw them doing robbery.

2. Impressive

Definition: influential or remarkable

Synonyms: absorbing, imposing, profound, monumental

Example: The outside interior of the house was really very impressive.

3. Incredible

Definition: beyond imagination

Synonyms: absurd, unbelievable, unplausible, unsubstantial

Example: Malaysia is an incredible country to visit.

4. Irrational

Definition: senseless or without any logic

Synonyms: brainless, disjointed, foolish, freaky

Example: No one can get his irrational logic.

5. Interior

Definition: in-house, inner

Synonyms: central, inside, domestic, remote, secret

Example: The interior of Blue Mosque is really very beautiful or soul catching.

6. Impossible

Definition: beyond possibility

Synonyms: absurd, inconceivable, cureless, impractical

Example: It is impossible to alter them; if possible, kindly guide me about it. 

7. Indian

Definition: related to India, its people or culture

Synonyms: Asian, Amerind 

Example: He has many Indian friends in Malaysia.

8. Industrial

Definition: related to manufacturing

Synonyms: automated, business, industry, industrialized

Example: They sold very poor products, even the people in their city are very industrial.

9. Immense

Definition: extremely large; extensive

Synonyms: boundless, endless, great, humongous

Example: Mughal architecture, displaying the immense power of spirituality of Islam.

10. Imperial

Definition: majestic or magisterial

Synonyms: royal, stately, lordly, kingly

Example: An imperial icon of Lahore, Quaid library adds grandeur to the city.

11. Iconic

Definition: having characteristic or related to an icon

Synonyms: recognizable, ideal, exemplary, representative

Example: Badshah Mosque is one of the most iconic examples of Mughal architecture. 

Positive Adjectives That Start with I to Describe Emotions, Personality, and Feelings

Which personality do you appreciate the most? Honest? Kind? Cool? Or is it represented by one of adjectives with letter I below?

1. Illustrative

Definition: explanatory and clarifying

Synonyms: comparative, descriptive, revealing

Example: This timetable is provided for illustrative purposes only.

2. Innocent

Definition: blameless or clean handed

Synonyms: honest, angelic, immaculate, guilt-free

Example: Ani is really an innocent but brilliant girl I must say.

3. Intelligent

Definition: having great sense of humour, very smart

Synonyms: able, alert, acute, imaginative, brilliant, brainy, inventive, creative

Example: She has an intelligent mind to attract the whole people around her.

Negative Adjectives That Start with I to Describe a Person

You can’t expect all people to be positive, but you can choose to leave the ones that are not. Below adjective words that start with H will help you to recognize those people.

1. Idle

Definition: out of action

Synonyms: abandoned, inactive, passive

Example: He made her idle for a long period of time, but she didn’t realize once.

2. Ignorant

Definition: unknowing, unconscious

Synonyms: illiterate, dense, misinformed, unaware

Example: He is totally ignorant about the danger; he is going to face there.

3. Illiterate

Definition: lacking of education or knowledge

Synonyms: unread, solecist, uneducated, unlearned

Example: She never votes in an election because she is illiterate.

4. Immodest

Definition: bold or shameless

Synonyms: indecent, depraved, bawdy

Examples: It is totally unfair to say she wears immodest clothes in front of the whole meeting.

5. Impersonal:

Definition: unfriendly or candid

Synonyms: abstract, neutral, unbiased

Example: She seems very impersonal, even unkind to others.

6. Incommunicative

Definition: uncommunicative; unwilling to talk

Synonyms: clammed up, quiet, dumb, reserved

Example: It seems so bad having incommunicative staff in office.

7. Inexpert

Definition:  having lack of skills

Synonyms: unskilled, unprofessional, untrained

Example: He is inexperienced and also inexpert to get successful.

8. Indebted

Definition: under obligation

Synonyms: answerable for, accountable, bound, obliged

Example: He is indebted because of his father’s life.

9. Inferior

Definition: not important, less in rank

Synonyms: bottom, secondary, minor, lower

Example: France is a country with an inferior population; trained for their physical capabilities.

10. Irritable

Definition: bad tempered or annoyed

Synonyms: bearish, brooding, offended, crabby

Example: His temper was irritable, even I have never seen him impatient with his employees.

11. Intrusive

Definition: being unwelcome or uninvited

Synonyms: interrupting, obtrusive, invasive, unwanted

Example: He is penetrated by younger intrusive masses at Forkill.

12. Intense

Definition: forcefully or passionate

Synonyms: acute, agonizing, ardent, eager

Example: She was feeling intense about that event, even after 5 years.

Negative Adjectives That Start with I to Describe an Event

Road to success is full of obstacles and you could run into setbacks and ironies. When you hear describing words beginning with I below, don’t be frustrated. Stay positive and keep fighting for your goals.

1. Impolitic

Definition: careless or unwise

Synonyms: undiplomatic, untimely, misguided

Example: I can’t follow his policy because it is completely impolitic.

2. Incoherent

Definition: disordered or incomprehensible

Synonyms: discordant, indistinct, dumb

Example: They end up there meeting with an incoherent decision.

3. Intended

Definition: having or showing intention about something

Synonyms: advised, destined, engaged, deliberate

Example: He is wrong, I was just intended to encourage her.

4. Increasable

Definition: something that can be increased

Synonyms: expand, enlarge, augment, multiply

Example: They have relatively increasable goods; at the end of one scale

5. Immature

Definition:  having no experience; inexperienced

Synonyms: premature, childish, raw, unsophisticated

Example: She is a nice and intelligent girl but a little immature as well.

6. Inexperienced

Definition: lack of knowledge or experience

Synonyms: unpractised, untrained, untutored

Example: He is too inexperienced and needs more guidelines to repair this car.

7. Illegal

Definition: against the law

Synonyms: banned, forbidden, actionable, crooked

Example:  There was nothing illegal going on, it was just a rumour.

8. Illogical

Definition: without making any sense; groundless

Synonyms: absurd, implausible, faulty, false

Example: It is absolutely an illogical thought; you are thinking beyond any logic.

9. Inappropriate

Definition: not suitable

Synonyms: incorrect, improper, irrelevant, out of place

Example: Your way of talking was inappropriate.

10. Incorrect

Definition: without fact; wrong

Synonyms: erroneous, false, imprecise, unreliable

Example: It would be incorrect to suppose that everything will be fine without making an effort.

11. Indistinct

Definition: ambiguous or blurred

Synonyms: obscure, confused, bleared, inexact

Example: This path is becoming indistinct with each step.

12. Intricate

Definition: complicated or complex

Synonyms: entangles, fancy, convoluted, tricky

Example: The ceiling of its courtroom embodies craftsmanship through the intricate detail of its hand painted motifs.

13. Invalid

Definition: disabled by any disease or injury

Synonyms: sick, unwell, infirm, ailing

Example: A fall from horse made him hopeless invalid.

Negative Adjectives That Start with I to Describe a Place

Adjectives that start with I to describe a place are not usually seen. But you master some, you’ll look more expert in English.

1. Illiberal

Definition: narrow-minded

Synonyms: greedy, biased, stingy, vulgar

Example: Unfortunately, illiberal democracy takes place in our country’s government.

2. Inclined

Definition: giving preference

Synonyms: bent on, likely, prone, willing

Example: He is inclined to go there and decline her offer.

3. Interval

Definition: break or pause

Synonyms: breach, distance, downtime, interruption

Example: They take an interval of about 2 hours at Indus valley.

4. Inefficient

Definition: not working well; improvident

Synonyms: ineffective, careless, disorganized, faulty

Example: This is an inefficient way to do this work; please do it properly.

5. Invisible

Definition: unable to see; concealed

Synonym: covert, disguised, deceptive, insensible

Example: Suddenly they got invisible from the main store.

Negative Adjectives That Start with I to Describe Emotions, Personality, and Feelings

Check list of adjectives that start with I below and if they make you picture someone, then keep yourself away from him/her.

1. Ironic

Definition: sarcastic or caustic

Synonyms: arrogant, critical, clever, mocking

Example: She likes her ironic nickname because of his red hairs that really matches his nickname.

2. Introverted

Definition: modest or reserved

Synonyms: secretive, demure, reclusive, cautious

Example: John has a quiet and introverted nature.

3. Incompetent

Definition: having no skill; unskilful, unable

Synonyms: amateur, awkward, clumsy, disqualified

Example: He is proved as incompetent as he loses his leadership.

4. Inconvenient

Definition: having trouble or bothersome

Synonyms: annoying, awkward, difficult, disturbing

Example: The present situation of corona covid-19 is very inconvenient for everyone.

5. Inactive

Definition: inert or lazy

Synonyms: asleep, inoperative, latent, indolent

Example:  They are big, stout men, but when they lead an inactive life, they become sluggish.

Final Thoughts on Adjectives That Start with I

Most common mistake found in people writing is they use some adjectives in an inappropriate way. This happens because they don’t know the detailed meaning of that adjective.

That is why we discussed the above adjectives that start with the letter I in detail about their meanings, synonyms and examples to clear the use of them properly in our mind.

Positive adjectives are used to bring about something good in a person, place or thing. On the other hand, negative descriptive words give a bad impression about something or anyone. 

Plenty of adjectives that start with I exist in English dictionary that can be searched, and you can choose some of them mentioned to use where appropriate.

Ps. See also positive words that start with I, nouns that start with I and verbs that start with I.

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