Word List for GRE: Words starting with I-K

iconoclast – person who attacks popular beliefs
idiosyncrasy – personal mannerism
idolatry – excessive admiration of
idyll – a carefree episode or experience
ignoble – dishonourable common undignified
ignominious – shameful dishonourable undignified disgraceful
illicit – unlawful forbidden

imbroglio – complicated and embarrassing situation
immaculate – pure faultless
imminent – likely to come or happen soon
immutable – that cannot be changed
impair – worsen diminish in value
impassive – unmoved feeling no sign of passion
impecunious – having little or no money
impede – hinder get in the way of
impediment – something that hinders (e.g. stammer)
impending – imminent being about to happen expected
imperative – urgent essential
imperious – commanding haughty arrogant
impermeable – that cannot be permeated
imperturbable – calm not capable of being excited
impervious – not allowing to pass through (of materials)
imperviousness – haughty arrogant commanding
impetuous
impiety – lack of reverence or dutifulness
implacable – incapable of being placated unpleasable
implicate – show that somebody has a share
implicit – implied though not plainly expressed
implosion – collapse bursting inward
importune – beg urgently solicit (of a prostitute)
imprecation – an invocation of evil a curse
impromptu – without preparation
impudent – rash indiscreet
impugned – challenged to be doubted
impute – to attribute to a cause or source ascribe
inadvertent – not paying proper attention
inane – silly senseless
inasmuch – since because
incense – make angry
incessant – often repeated continual
inchoate – not yet fully formed rudimentary elementary
incipient – beginning
incise – engrave make a cut in
incite – stir up rouse
inclined – directing the mind in a certain direction
incongruous – out of place not in harmony or agreement
incorrigibility – cannot be cured or corrected
incredulous – sceptical unwilling to believe
inculcate – fix firmly by repetition
incumbents – official duties
incursion – a raid a sudden attack
indefatigability – not easily exhaustible tirelessness
indelible – that cannot be rubbed out
indigence – poverty
indigenous – native
indistinct – not easily heard seen clearly marked
indolence – laziness
indomitable – not easily discouraged or subdued
indulge – gratify give way to satisfy allow oneself
indulgent – inclined to indulge
ineffable – to great to be described in words
ineluctable – certain inevitable
inept – unskilful said or done at the wrong time
ineptitude – quality of being unskilful
inferno – hell
infuriate – fill with fury or rage
infuse – put pour fill
ingenuous – naive young artless frank honest sincere
ingest – take in by swallowing
inimical – harmful or friendly
inimitable – defying imitation unmatchable
innocuous – causing no harm
inscrutable – incapable of being discovered or understood
insensible – unconscious unresponsive unaffected
insinuate – suggest unpleasantly make a way for something gently
insipid – without taste or flavour
insouciant – unconcerned carefree
insularity – narrow-mindedness isolated
insurrection – rising of people to open resistance to
interdict – prohibit forbid
interim – as an instalment
intersperse – place here and there
intransigence
intransigent – uncompromising
intrepid – fearless brave undaunted
introspection – examining one’s own thoughts and feelings
inundate – flood cover by overflowing
inured – accustomed to adapted
invective – abusive language curses
inveigh – to attack verbally denounce deprecate
inveterate – deep-rooted. long-established
invincible – too strong to be defeated
involute – complex
irascible – irritable easily angered
irate – angry
ire – anger
irksome – tiresome
irresolute – hesitating undecided
irrevocable – final and unalterable
itinerate – to travel from place to place to peregrinate
jabber – talk excitedly utter rapidly
jibe – gibe make fun of
jocular – meant as a joke
judicious – sound in judgment wise
knit – draw together unite firmly

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