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GRE word list - I
ichthyologist one that study a branch of zoology that deals with fishes
idiosyncratic a peculiarity of constitution or temperament:an individualizingcharacteristic or quality
idolatrize admires intensely and often blindly
ignite to set afire; also :KINDLE
ignominy deep personal humiliation and disgrace
ignorant destitute of knowledge or education also lacking knowledge or comprehension of the thing specified
ignore to reject (a bill of indictment) as ungrounded
illegible Undecipherable.
illiteracy the quality or state of being illiterate; especially :inability to read or write
illuminati persons who are or who claim to be unusually enlightened
illumination one of the decorative features used in the art of illuminating or in decorative lighting
illusory based on or producing illusion:DECEPTIVE
illustrate to provide with visual features intended to explain or decorate
imbibe to absorb or take in as if by drinking
imbroglio a violently confused or bitterly complicated altercation:EMBROILMENT
imitation the quality of an object in possessing some of the nature or attributes of a transcendent idea
immaculate having no stain or blemish:PURE
immanent remaining or operating within a domain of reality or realm of discourse:INHERENT; specifically :having existence or effect only within the mind or consciousness
immaterial of no substantial consequence:UNIMPORTANT
immemorial extending or existing since beyond the reach of memory, record, or tradition
imminent ready to take place; especially :hanging threateningly over one's head
immune not susceptible or responsive; especially :having a high degree of resistance to a disease
immure to enclose within or as if within walls b:IMPRISON
immutable not capable of or susceptible to change
imp a mischievous child:URCHIN
impair to damage or make worse by or as if by diminishing in some material respect
impassive unsusceptible to or destitute of emotion
impeccable faultless
impecunious having very little or no money usually habitually:PENNILESS
impede to interfere with or slow the progress of
impend to be about to occur
impenetrable incapable of being penetrated or pierced or incapable of being comprehended:INSCRUTABLE
impenitent not feeling or expressing humble or regretful pain or sorrow for sins or offenses
imperative expressive of a command, entreaty, or exhortation
imperial of, relating to, befitting, or suggestive of an empire or an emperor ;of superior or unusual size or excellence
imperious marked by arrogant assurance:DOMINEERING
impertinent given to or characterized by insolent rudeness
imperturbable marked by extreme calm, impassivity, and steadiness:SERENE
impervious not allowing entrance or passage:IMPENETRABLE also not capable of being damaged or harmed
impetuosity Rashness.
impetuous marked by impulsive vehemence or passion
impiety the quality or state of being impious:IRREVERENCE
implacable not placable:not capable of being appeased, significantly changed, or mitigated
implement CARRY OUT, ACCOMPLISH; especially:to give practical effect to and ensure of actual fulfillment by concrete measures
implicate to involve as a consequence, corollary, or natural inference:IMPLY
implode to collapse inward as if from external pressure; also:to become greatly reduced as if from collapsing
importune beg earnestly
imposing impressive in size, bearing, dignity, or grandeur
impostor one that assumes false identity or title for the purpose of deception
impotent not potent:lacking in power, strength, or vigor:HELPLESS
impromptu composed or uttered without previous preparation:EXTEMPORANEOUS
improvident not provident:not foreseeing and providing for the future
improvised to compose, recite, play, or sing extemporaneously
imprudent not prudent:lacking discretion
impudent marked by contemptuous or cocky boldness or disregard of others:INSOLENT
impugn to assail by words or arguments:oppose or attack as false or lacking integrity
impuissance WEAKNESS, POWERLESSNESS
impute to lay the responsibility or blame for often falsely or unjustly imputable:nettle
inadvertent not focusing the mind on a matter: INATTENTIVE
inalienable incapable of being alienated, surrendered, or transferred
inane lacking significance, meaning, or point: SILLY
inanimate not animated or lively:DULL
inaugurate to induct into an office with suitable ceremonies
incandescent strikingly bright, radiant, or clear
incantation singing or chanting of magic spells; magical formula
incarnate invested with bodily and especially human nature and form
incendiary of, relating to, or involving a deliberate burning of property
incense to arouse the extreme anger or indignation of
inception an act, process, or instance of beginning:COMMENCEMENT
incessant continuing or following without interruption:UNCEASING
inch to move by small degrees:progress slowly
inchoate being only partly in existence or operation; especially :imperfectly formed or formulated:FORMLESS
incinerate to cause to burn to ashes
incipient beginning to come into being or to become apparent
incisive impressively direct and decisive (as in manner or presentation)
incite to move to action:stir up:spur on:urge on
inclement lacking mildness:as severe in temper or action:UNMERCIFUL
incogitant THOUGHTLESS, INCONSIDERATE
incongruent not superposable so as to be coincident throughout,not congruent
inconsequential of no significance:UNIMPORTANT
incontrovertible not open to question:INDISPUTABLE
incorrigible incapable of being corrected or amended UNALTERABLE, INVETERATE
incriminate to charge with or show evidence or proof of involvement in a crime or fault
inculcate to teach and impress by frequent repetitions or admonitions
inculpate INCRIMINATE
incursion a hostile entrance into a territory:RAID
indefatigable incapable of being fatigued:UNTIRING
indelible UNFORGETTABLE, MEMORABLE
indemnity security against hurt, loss, or damage
indict to charge with a crime by the finding or presentment of a jury (as a grand jury) in due form of law
indifferent marked by a lack of interest, enthusiasm, or concern for something:APATHETIC
indigenous having originated in and being produced, growing, living, or occurring naturally in a particular region or environment
indigent suffering from indigence:IMPOVERISHED
indispensability absolutely necessary:ESSENTIAL
indoctrinate to instruct especially in fundamentals or rudiments:TEACH
indolent averse to activity, effort, or movement:habitually lazy
inducement a motive or consideration that leads one to action or to additional or more effective actions
indulgent indulging or characterized by indulgence; especially:LENIENT
indurate to make hard
ineffable incapable of being expressed in words : INDESCRIBABLE
ineluctable not to be avoided, changed, or resisted:INEVITABLE
inept generally incompetent:BUNGLING
ineptitude quality of being inept
inert deficient in active properties; especially:lacking a usual or anticipated chemical or biological action
inestimable Above price.
inevitable incapable of being avoided or evaded
inexorable not to be persuaded or moved by entreaty:RELENTLESS
infamy evil reputation brought about by something grossly criminal, shocking, or brutal
infatuate to cause to be foolish:deprive of sound judgment
infelicitous not appropriate in application or expression
infer GUESS, SURMISE
inferno a place or a state that resembles or suggests hell
infiltrate to pass (troops, for example) surreptitiously into enemy-held territory
infinite immeasurably or inconceivably great or extensive: INEXHAUSTIBLE
infirm of poor or deteriorated vitality; especially:feeble from age
inflame to excite to excessive or uncontrollable action or feeling
influx a coming in
infuriate To make furious; enrage
infuse INSPIRE, ANIMATE
ingenious marked by originality, resourcefulness, and cleverness in conception or execution
ingenuous showing innocent or childlike simplicity and candidness
ingrained to work indelibly into the natural texture or mental or moral constitution
ingratiating capable of winning favor:PLEASING
inherent involved in the constitution or essential character of something:belonging by nature or habit:INTRINSIC
inimical a:having the disposition of an enemy:HOSTILEb:reflecting or indicating hostility:UNFRIENDLY
inimitable not capable of being imitated: MATCHLESS
iniquity gross injustice:WICKEDNESS
initial placed at the beginning:FIRST
inkling a slight knowledge or vague notion
innocent free from guilt or sin especially through lack of knowledge of evil:BLAMELESS
innocuous not likely to give offense or to arouse strong feelings or hostility:INOFFENSIVE, INSIPID
innovation the introduction of something new
inquiry examination into facts or principles:RESEARCH
insatiable incapable of being satisfied:QUENCHLESS
insipid lacking in qualities that interest, stimulate, or challenge:DULL, FLAT
insolent exhibiting boldness or effrontery:IMPUDENT
insouciant lighthearted unconcern:NONCHALANCE
inspired outstanding or brilliant in a way or to a degree suggestive of divine inspiration
instate to set or establish in a rank or office:INSTALL
instigate to goad or urge forward:PROVOKE
instill to impart gradually
institute to originate and get established:ORGANIZE
insubordinate disobedient to authority
insular characteristic of an isolated people; especially:being, having, or reflecting a narrow provincial viewpoint
insularity narrow-mindedness/isolated
insulate to place in a detached situation:ISOLATE; especially:to separate from conducting bodies by means of nonconductors so as to prevent transfer of electricity, heat, or sound
insurgent a person who revolts against civil authority or an established government; especially:a rebel not recognized as a belligerent
intangible not tangible:IMPALPABLE
integral essential to completeness:CONSTITUENT
integrity the quality or state of being complete or undivided:COMPLETENESS
intelligible capable of being understood or comprehended
intemperate not temperate especially:given to excessive use of intoxicating liquors
intensify to make intense or more intensive:STRENGTHEN
inter to deposit (a dead body) in the earth or in a tomb
intercede to intervene between parties with a view to reconciling differences:MEDIATE
interdict to forbid in a usually formal or authoritative manner
interim an intervening time:INTERVAL
interlock to become locked together or interconnected
interlope one that intrudes in a place or sphere of activity
interminable having or seeming to have no end; especially:wearisomely protracted
intermittent coming and going at intervals:not continuous
interrogate to question formally and systematically:probe
intervene to interfere usually by force or threat of force in another nation's internal affairs especially to compel or prevent an action
intimate 1. to make known especially publicly or formally:ANNOUNCE 2. a friend or confidant marked by very close association, contact, or familiarity
intimidate to make timid or fearful:FRIGHTEN; especially:to compel or deter by or as if by threats
intransigent refusing to compromise or to abandon an extreme position or attitude:UNCOMPROMISING
intrepid characterized by resolute fearlessness, fortitude, and endurance
intricacy the quality or state of being intricate
intrigue to arouse the interest, desire, or curiosity of
intrinsic belonging to the essential nature or constitution of a thing
intuition The act or faculty of knowing or sensing without the use of rational processes; immediate cognition.
inure to accustom to accept something undesirable
invective of, relating to, or characterized by insult or abuse
inveigh to protest or complain bitterly or vehemently:RAIL
inveigle to win over by wiles:ENTICE
inventory an itemized list of current assets:as a catalog of the property of an individual or estate
investigate to make a systematic examination; especially:to conduct an official inquiry
inveterate firmly established by long persistence
invidious tending to cause discontent, animosity, or envy
invigorate to give life and energy to:ANIMATE; also:STIMULATE
invincible Incapable of being overcome or defeated; unconquerable.
inviolate not violated or profaned; especially :PURE
invoice a consignment of merchandise
invoke to put into effect or operation:IMPLEMENT
invulnerable incapable of being wounded, injured, or harmed
irascible marked by hot temper and easily provoked anger
irate arising from anger
iridescence a lustrous rainbowlike play of color caused by differential refraction of light waves (as from an oil slick, soap bubble, or fish scales) that tends to change as the angle of view changes
irk to make weary, irritated, or bored
ironclad so firm or secure as to be unbreakable:as a:BINDING
irony a pretense of ignorance and of willingness to learn from another assumed in order to make the other's false conceptions conspicuous by adroit questioning
irradicable impossible to eradicate : DEEP-ROOTED
irreducible impossible to transform into or restore to a desired or simpler condition
irrelevant not relevant:INAPPLICABLE
irresolute uncertain how to act or proceed:VACILLATING
irreverent lacking proper respect or seriousness; also :SATIRIC
irritate to provoke impatience, anger, or displeasure in:ANNOY
issue 1. the act of publishing or officially giving out or making available 2. a matter that is in dispute between two or more parties
isthmus a narrow strip of land connecting two larger land areas
itinerant wandering; traveling

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