9-Letter Adjectives Starting With I

Here's the list of all the 260 9-Letter Adjectives Starting With I in the English Language.

The list is arranged by the word lengths. Click on the length below to jump to the relevant section of the page.

Common Adjectives (with Definitions and Examples)
important
1. of great significance or value
2. important in effect or meaning
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increased
1. made greater in size or amount or degree
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immediate
1. having no intervening medium
2. of the present time and place
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improving
1. getting higher or more vigorous
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inclusive
1. including much or everything; and especially including stated limits
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intensive
1. tending to give force or emphasis
2. of agriculture; intended to increase productivity of a fixed area by expending more capital and labor
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identical
1. (of twins) derived from a single egg or ovum
2. exactly alike; incapable of being perceived as different
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incorrect
1. not correct; not in conformity with fact or truth
2. not in accord with established usage or procedure
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inventionMore Definitions →
incentiveMore Definitions →
integrateMore Definitions →
inherited
1. occurring among members of a family usually by heredity
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invisible
1. impossible or nearly impossible to see; imperceptible by the eye
2. not prominent or readily noticeable
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impressed
1. deeply or markedly affected or influenced
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intuitive
1. spontaneously derived from or prompted by a natural tendency
2. obtained through intuition rather than from reasoning or observation
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inspiring
1. stimulating or exalting to the spirit
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itineraryMore Definitions →
irregular
1. not occurring at a regular rate or fixed intervals
2. failing to meet a standard of manufacture due to an imperfection
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intrinsic
1. belonging to a thing by its very nature
2. situated within or belonging solely to the organ or body part on which it acts
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incumbent
1. lying or leaning on something else
2. necessary (for someone) as a duty or responsibility; morally binding
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invariant
1. unaffected by a designated operation or transformation
2. unvarying in nature
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imaginary
1. not based on fact; existing only in the imagination
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inorganic
1. relating or belonging to the class of compounds not having a carbon basis
2. lacking the properties characteristic of living organisms
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informingMore Definitions →
inaugural
1. occurring at or characteristic of a formal investiture or induction
2. serving to set in motion
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imitation
1. not genuine or real; being an imitation of the genuine article
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impartial
1. showing lack of favoritism
2. free from undue bias or preconceived opinions
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intricate
1. having many complexly arranged elements; elaborate
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incapable
1. not being susceptible to or admitting of something (usually followed by `of')
2. not meeting requirements
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inhibited
1. held back or restrained or prevented
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imperfect
1. wanting in moral strength, courage, or will; having the attributes of man as opposed to e.g. divine beings
2. not perfect; defective or inadequate
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impending
1. close in time; about to occur
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iterative
1. marked by iteration
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inhabited
1. having inhabitants; lived in
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inscribed
1. written (by handwriting, printing, engraving, or carving) on or in a surface
2. cut or impressed into a surface
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inductive
1. arising from inductance
2. of reasoning; proceeding from particular facts to a general conclusion
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insulting
1. expressing extreme contempt
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intrusive
1. tending to intrude (especially upon privacy)
2. of rock material; forced while molten into cracks between layers of other rock
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irritable
1. easily irritated or annoyed
2. abnormally sensitive to a stimulus
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inventive
1. (used of persons or artifacts) marked by independence and creativity in thought or action
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insistingMore Definitions →
implanted
1. (used especially of ideas or principles) deeply rooted; firmly fixed or held
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impatient
1. (usually followed by `to') full of eagerness
2. restless or short-tempered under delay or opposition
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ingenious
1. showing inventiveness and skill
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illogical
1. lacking in correct logical relation
2. lacking orderly continuity
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isolating
1. relating to or being a language in which each word typically expresses a distinct idea and part of speech and syntactical relations are determined almost exclusively by word order and particles
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irritated
1. aroused to impatience or anger
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inquiring
1. given to inquiry
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insurgent
1. in opposition to a civil authority or government
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impromptu
1. with little or no preparation or forethought
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isotropic
1. invariant with respect to direction
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insoluble
1. without hope of solution
2. (of a substance) incapable of being dissolved
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inaudible
1. impossible to hear; imperceptible by the ear
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insidious
1. beguiling but harmful
2. intended to entrap
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immutable
1. not subject or susceptible to change or variation in form or quality or nature
2. constant and unchanging
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incarnate
1. possessing or existing in bodily form
2. invested with a bodily form especially of a human body
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impulsive
1. proceeding from natural feeling or impulse without external stimulus
2. without forethought
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inclement
1. (of weather or climate) severe
2. used of persons or behavior; showing no clemency or mercy
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insolvent
1. unable to meet or discharge financial obligations
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indulgent
1. characterized by or given to yielding to the wishes of someone
2. tolerant or lenient
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inelastic
1. not elastic
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injurious
1. harmful to living things
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inundated
1. covered with water
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isometric
1. related by an isometry
2. of or involving muscular contraction in which tension increases while length remains constant
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innermost
1. being deepest within the self
2. situated or occurring farthest within
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incognito
1. with your identity concealed
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infantile
1. of or relating to infants or infancy
2. indicating a lack of maturity
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incessant
1. uninterrupted in time and indefinitely long continuing
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immunized
1. having been rendered unsusceptible to a disease
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itinerant
1. traveling from place to place to work
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infective
1. able to cause disease
2. caused by infection or capable of causing infection
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idealized
1. exalted to an ideal perfection or excellence
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innocuous
1. not causing disapproval
2. lacking intent or capacity to injure
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immovable
1. not able or intended to be moved
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inanimate
1. appearing dead; not breathing or having no perceptible pulse
2. belonging to the class of nouns denoting nonliving things
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indulgingMore Definitions →
illegible
1. (of handwriting, print, etc.) not legible
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incurable
1. incapable of being cured
2. unalterable in disposition or habits
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insomniac
1. experiencing or accompanied by sleeplessness
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indelible
1. cannot be removed or erased
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ingrained
1. (used especially of ideas or principles) deeply rooted; firmly fixed or held
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indignant
1. angered at something unjust or wrong
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imprecise
1. not precise
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insistent
1. repetitive and persistent
2. demanding attention
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infertile
1. incapable of reproducing
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incipient
1. only partly in existence; imperfectly formed
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insurable
1. capable of being insured or eligible to be insured
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ischaemic
1. relating to or affected by ischemia
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inflected
1. (of the voice) altered in tone or pitch
2. showing alteration in form (especially by the addition of affixes)
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idiomatic
1. of or relating to or conforming to idiom
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intestate
1. having made no legally valid will before death or not disposed of by a legal will
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insincere
1. lacking sincerity
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ineffable
1. defying expression or description
2. too sacred to be uttered
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intruding
1. projecting inward
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imprudent
1. not prudent or wise
2. lacking wise self-restraint
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impetuous
1. characterized by undue haste and lack of thought or deliberation
2. marked by violent force
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introvertMore Definitions →
imperious
1. having or showing arrogant superiority to and disdain of those one views as unworthy
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invectiveMore Definitions →
imitative
1. marked by or given to imitation
2. (of words) formed in imitation of a natural sound
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9-Letter Adjectives Starting With I