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Set 4 500 Key Words for the SAT

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incorrigible
impossible to correct; control; or discipline
incredulous
unwilling or unable to believe
indict
charge with a crime; accuse
indigent
very poor
indolent
lazy
induce
cause to happen; to bring about
inert
lacking movement; inactive; sluggish
infallible
incapable of making a mistake
infamy
a bad reputation; notoriety
infer
to figure out, based on given information; conclude; deduce
infiltrate
penetrate by passing through gaps; enter secretly and become established, such as a spy might do through an enemy organization
ingenuous
naive; unsophisticated; inexperienced
innate
having a quality that arises from within, rather than learned or acquired from the outside; native; inborn
innocuous
harmless; inoffensive
innovation
a new idea, product, or method
inscrutable
mysterious
insipid
dull; flat; without sparkle or flavor
insolent
rude; haughty
insolvent
unable to pay bills; bankrupt
intermittent
occuring at intervals; periodic; not constant or continual
intractable
stubborn; immovable
intrinsic
located within the very nature of an object or person; inherent
invert
turn upside down or inside out; reverse position
irascible
easily angered
irony
an unexpected outcome, or the use of a word that is the opposite of its literal meaning
irresolute
indecisive; unsure
irreverent
disrespectful
jargon
specialized language used by a particular group
jaundice
yellow color; or, envy or resentment
jaunty
lively; perky
jeopardy
the threat or possibility of danger
jettison
to throw overboard; to discard
jocular
joking; playful; jesting; witty
jubilant
filled with joy
judicious
wise; making good decisions
juncture
point in time, especially a cruel one; joint or connection
juxtapose
to place side by side
kindle
to start a fire; ignite; arouse
kinetic
in motion; active
laconic
quiet; of few words; terse
lament
express sorrow; complain
languish
lose energy or motivation; become weak or depressed
latent
existing but inactive, such as a certain quality; dormant; invisible
laud
praise, worship, extol
legacy
something inherited, either from an ancestor or from the past itself
lethargic
tired; sluggish; drowzy
levity
lightness, playfulness, jocularity
lionize
to put someone on a pedestal; to treat with great respect
listless
tired; sluggish; lacking drive
loathe
to hate
loath
reluctant; unwilling
lofty
at a great height; elevated; noble
loquacious
talkative
lucid
easy to understand; transparent; clear thinking
ludicrous
absurd; ridiculous
lugubrious
mournful
magnanimous
big hearted; generous; forgiving; noble
magnate
a person of great power
malediction
evil speech; curse
malefactor
person who tries to hurt others
malice
a desire to cause harm or suffering
malign
to say evil or harmful things about someone; defame; vilify
malleable
able to be reshaped by force; pliable; impressionable
marred
spoiled, scratched, blemished
meager
small in size or amount, thin, weak
meander
wander in a carefree manner; follow a winding course; ramble
mellifluous
smooth, sweetly flowing
mendacity
a lie; a false statement
meticulous
very careful about details
minute
very small in szie
misconstrue
misunderstand; interpret incorrectly
mitigate
make less severe, mollify
mollify
lessen anger, soothe, placate
monologue
a long, uninterrupted speech