Words Starting With I
140 SAT and GRE words beginning with I. Each links to its full entry with a definition, an example sentence and related words.
- Iconoclastnoun
someone who attacks cherished ideas or traditional institutions
- Idiosyncrasynoun
a behavioral attribute that is distinctive and peculiar to an individual
- Idolatrynoun
the worship of idols; the worship of images that are not God
- Ignobleadjective
completely lacking nobility in character or quality or purpose; ; - Oliver Wendell Holmes, Jr.
- Ignominiousadjective
(used of conduct or character) deserving or bringing disgrace or shame; - Rachel Carson
- Illicitadjective
contrary to accepted morality (especially sexual morality) or convention
- Illuminateverb
add embellishments and paintings to (medieval manuscripts)
- Illusoryadjective
based on or having the nature of an illusion
- Imbueverb
fill, soak, or imbue totally
- Immaculateadjective
free from stain or blemish
- Imminentadjective
close in time; about to occur
- Immutableadjective
not subject or susceptible to change or variation in form or quality or nature
- Impartialadjective
free from undue bias or preconceived opinions
- Impassenoun
a situation in which no progress can be made or no advancement is possible
- Impassiveadjective
having or revealing little emotion or sensibility; not easily aroused or excited; ; - Nordhoff & Hall; -Virginia Woolf
- Impeccableadjective
without fault or error
- Impecuniousadjective
not having enough money to pay for necessities
- Impedeverb
be a hindrance or obstacle to
- Impendingverb
be imminent or about to happen
- Imperativenoun
a mood that expresses an intention to influence the listener's behavior
- Imperiousadjective
having or showing arrogant superiority to and disdain of those one views as unworthy; ; ; ; ; ; ; - W.L.Shirer
- Impertinentadjective
characterized by a lightly pert and exuberant quality
- Imperturbableadjective
not easily perturbed or excited or upset; marked by extreme calm and composure
- Imperviousadjective
not admitting of passage or capable of being affected
- Impetuousadjective
characterized by undue haste and lack of thought or deliberation; ; ; ; ; (`brainish' is archaic)
- Impingeverb
advance beyond the usual limit
- Implacableadjective
incapable of being placated
- Implausibleadjective
having a quality that provokes disbelief
- Implementnoun
instrumentation (a piece of equipment or tool) used to effect an end
- Implicateverb
impose, involve, or imply as a necessary accompaniment or result
- Implicitadjective
implied though not directly expressed; inherent in the nature of something
- Imploreverb
call upon in supplication; entreat
- Impotentadjective
lacking power or ability; - Freeman J.Dyson
- Impregnableadjective
immune to attack; incapable of being tampered with
- Impromptunoun
a short musical passage that seems to have been made spontaneously without advance preparation
- Improprietynoun
the condition of being improper
- Improvidentadjective
not provident; not providing for the future
- Imprudentadjective
not prudent or wise; ; - A.M.Schlesinger
- Impudentadjective
marked by casual disrespect
- Impugnverb
attack as false or wrong
- Impunitynoun
exemption from punishment or loss
- Inadvertentadjective
happening by chance or unexpectedly or unintentionally
- Inaneadjective
devoid of intelligence
- Inarticulateadjective
without or deprived of the use of speech or words
- Inaugurateverb
open ceremoniously or dedicate formally
- Incandescentadjective
characterized by ardent emotion or intensity or brilliance
- Incantationnoun
a ritual recitation of words or sounds believed to have a magical effect
- Incarcerateverb
lock up or confine, in or as in a jail
- Incendiarynoun
a bomb that is designed to start fires; is most effective against flammable targets (such as fuel)
- Incensenoun
a substance that produces a fragrant odor when burned
- Inceptionnoun
an event that is a beginning; a first part or stage of subsequent events
- Incessantadjective
uninterrupted in time and indefinitely long continuing
- Inchoateadjective
only partly in existence; imperfectly formed
- Incisiveadjective
having or demonstrating ability to recognize or draw fine distinctions
- Inciteverb
give an incentive for action
- Inclementadjective
used of persons or behavior; showing no clemency or mercy
- Incongruousadjective
lacking in harmony or compatibility or appropriateness
- Inconsequentialadjective
not following logically as a consequence
- Incorrigibleadjective
impervious to correction by punishment
- Incredulousadjective
not disposed or willing to believe; unbelieving
- Inculcateverb
teach and impress by frequent repetitions or admonitions
- Incumbentadjective
necessary (for someone) as a duty or responsibility; morally binding
- Incursionnoun
the act of entering some territory or domain (often in large numbers)
- Indefatigableadjective
showing sustained enthusiastic action with unflagging vitality
- Indelibleadjective
cannot be removed or erased
- Indictverb
accuse formally of a crime
- Indifferentadjective
marked by no especial liking or dislike or preference for one thing over another
- Indigenousadjective
originating where it is found
- Indigentadjective
poor enough to need help from others
- Indignantadjective
angered at something unjust or wrong
- Indolencenoun
inactivity resulting from a dislike of work
- Indolentadjective
(of tumors, e.g.) slow to heal or develop and usually painless
- Indomitableadjective
impossible to subdue
- Indubitableadjective
too obvious to be doubted
- Induceverb
produce electric current by electrostatic or magnetic processes
- Indulgentadjective
characterized by or given to yielding to the wishes of someone
- Ineffableadjective
defying expression or description
- Ineptadjective
revealing lack of perceptiveness or judgment or finesse
- Inertadjective
having only a limited ability to react chemically; chemically inactive
- Inevitableadjective
incapable of being avoided or prevented
- Inexorableadjective
impervious to pleas, persuasion, requests, reason; ; - W.Churchill
- Infallibleadjective
incapable of failure or error
- Infamousadjective
known widely and usually unfavorably
- Inferverb
draw from specific cases for more general cases
- Infernaladjective
of or pertaining to or characteristic of a very uncontrolled and intense fire
- Infiltrateverb
enter a group or organization in order to spy on the members
- Infinitesimalnoun
(mathematics) a variable that has zero as its limit
- Ingeniousadjective
showing inventiveness and skill
- Ingenuousadjective
characterized by an inability to mask your feelings; not devious
- Ingratenoun
a person who shows no gratitude
- Ingratiateverb
gain favor with somebody by deliberate efforts
- Inherentadjective
existing as an essential constituent or characteristic
- Inhibitverb
control and refrain from showing; of emotions, desires, impulses, or behavior
- Inimicaladjective
not friendly
- Iniquitynoun
absence of moral or spiritual values
- Innateadjective
present at birth but not necessarily hereditary; acquired during fetal development
- Innocuousadjective
not injurious to physical or mental health
- Innovateverb
bring something new to an environment
- Innuendonoun
an indirect (and usually malicious) implication
- Inordinateadjective
beyond normal limits
- Insatiableadjective
impossible to satisfy
- Inscrutableadjective
of an obscure nature; ; ; ; - Rachel Carson
- Insidiousadjective
working or spreading in a hidden and usually injurious way
- Insinuateverb
introduce or insert (oneself) in a subtle manner
- Insipidadjective
lacking interest or significance or impact
- Insolentadjective
unrestrained by convention or propriety; ; ; - Los Angeles Times; ; ; - Bertrand Russell
- Insolventnoun
someone who has insufficient assets to cover their debts
- Instigateverb
serve as the inciting cause of
- Insularadjective
suggestive of the isolated life of an island; - Leonard Michaels
- Insurgentnoun
a person who takes part in an armed rebellion against the constituted authority (especially in the hope of improving conditions)
- Insurrectionnoun
organized opposition to authority; a conflict in which one faction tries to wrest control from another
- Integraladjective
constituting the undiminished entirety; lacking nothing essential especially not damaged; - Bacon
- Integritynoun
an undivided or unbroken completeness or totality with nothing wanting
- Interlocutornoun
the performer in the middle of a minstrel line who engages the others in talk
- Interminableadjective
tiresomely long; seemingly without end
- Intermittentadjective
stopping and starting at irregular intervals
- Interpolateverb
insert words into texts, often falsifying it thereby
- Intractableadjective
not tractable; difficult to manage or mold
- Intransigentadjective
impervious to pleas, persuasion, requests, reason; ; - W.Churchill
- Intrepidadjective
invulnerable to fear or intimidation
- Intricateadjective
having many complexly arranged elements; elaborate
- Intrinsicadjective
situated within or belonging solely to the organ or body part on which it acts
- Introspectiveadjective
given to examining own sensory and perceptual experiences
- Inundateverb
fill quickly beyond capacity; as with a liquid
- Inuredadjective
made tough by habitual exposure; ; - Robert Lynd; - V.S.Pritchett
- Invectivenoun
abusive or venomous language used to express blame or censure or bitter deep-seated ill will
- Inveighverb
speak against in an impassioned manner
- Inveigleverb
influence or urge by gentle urging, caressing, or flattering
- Inverseadjective
opposite in nature or effect or relation to another quantity
- Invidiousadjective
containing or implying a slight or showing prejudice
- Invincibleadjective
incapable of being overcome or subdued
- Inviolableadjective
immune to attack; incapable of being tampered with
- Irascibleadjective
quickly aroused to anger
- Irateadjective
feeling or showing extreme anger
- Ironicadjective
characterized by often poignant difference or incongruity between what is expected and what actually is
- Irrationalnoun
a real number that cannot be expressed as a rational number
- Irreconcilableadjective
impossible to reconcile
- Irrefutableadjective
impossible to deny or disprove
- Irrelevantadjective
having no bearing on or connection with the subject at issue
- Irreverentadjective
characterized by a lightly pert and exuberant quality