absent – present
accurate – inaccurate
active, energetic, lively – inactive, passive, apathetic
attentive, considerate, thoughtful – inattentive, inconsiderate
awful, terrible, horrible, dreadful – great, excellent, wonderful
awkward, clumsy – skillful, dexterous, adroit, deft
basic, fundamental – secondary, additional
beautiful, attractive, good-looking, pretty – ugly, repulsive
best – worst
big, large – little, small
bold, confident – timid, shy
brave, bold, courageous, fearless – afraid, frightened, scared, timid, cowardly
bright, clear, vivid, colorful – dull, dim, colorless
busy, occupied – free
calm, quiet, peaceful – noisy, agitated, excited, nervous
careful, cautious – careless
cheerful, joyful – cheerless, gloomy
clean, neat, tidy – dirty, untidy
clever, smart – foolish, silly, stupid
cold, chilly, cool – hot, warm
comfortable, cozy – uncomfortable
confident, sure, certain, positive – doubtful, uncertain
constructive – destructive
convenient – inconvenient
correct – incorrect, wrong
crazy, insane – reasonable, sensible, rational
cruel, merciless, ruthless, brutal, inhuman – kind, merciful, humane
dead – alive
deep, profound – shallow, superficial
definite, clear – vague, indefinite
delicious, tasty – tasteless, unpalatable, inedible
different – the same, similar
difficult, hard – easy
dry – wet
eager, willing – reluctant, unwilling
early – late
economic (situation), economical (car)
educated, literate – uneducated, ignorant, illiterate
empty – full
essential, indispensable, requisite, necessary, required – unnecessary, optional, dispensable
even, smooth – rough, uneven
even – odd, uneven
evident, obvious, clear, plain – vague, obscure
evil, malicious – kind, nice, good
exact, precise – inaccurate, inexact
expensive, costly, valuable – inexpensive, cheap
experienced, skilled, competent, qualified – inexperienced, unskilled, incompetent, unqualified
fair, just, objective, unbiased, impartial – unfair, unjust, biased, prejudiced
faithful, loyal, devoted – unfaithful, disloyal, treacherous
famous, renowned, celebrated, distinguished, well-known – unknown, obscure
far, distant, remote – near, close
fast, quick, rapid, speedy, swift – slow
favorable, beneficial, profitable – harmful
fine, refined, delicate, exquisite – common, coarse, gross, vulgar
firm, steady, stable, strong – shaky, unstable, weak
first – last
flexible – rigid, inflexible, stiff
foreign, alien – domestic, local, native
fragile, delicate – strong, sturdy
frequent – rare, infrequent
fresh – stale
friendly – unfriendly, hostile
front – back, rear
funny, amusing, humorous, comic, comical, laughable, ridiculous – serious, grave
general – special, particular, specific
gentle, mild, soft – coarse, rough, harsh, severe
good, nice, pleasant – bad, unpleasant, disgusting
happy, glad, pleased – unhappy, sad, miserable
hard – soft
heavy – light
high – low
historic (moment), historical (fact)
honest, truthful, trustworthy, sincere – dishonest, insincere
huge, enormous, colossal, giant, gigantic – small, tiny
important, significant – unimportant, insignificant, petty
incredible, unbelievable, fantastic
independent, free – dependent, not free
intelligent, wise – dull, stupid
interested, curious – uninterested / disinterested, indifferent, bored
interesting – dull, boring
kind, good-natured – strict, unkind, ill-natured
lazy, idle – hard-working
light – dark
long – short, brief, concise
loud, noisy – quiet, soft
loving, fond, affectionate, tender – unloving, indifferent, harsh
lucky, fortunate – unlucky, unfortunate
magnificent, grand, majestic – shabby, miserable
main, chief, principal – subordinate, subsidiary, secondary, auxiliary, additional
moral, ethical, decent – immoral, unethical, indecent, obscene
narrow – wide
natural – unnatural, affected
necessary, required – unnecessary
new, modern, up-to-date – old, old-fashioned, outdated, ancient
noble, honorable – mean
normal, usual, standard, regular – strange, peculiar, odd, unusual
original – ordinary, banal, trite
outstanding, prominent, eminent, remarkable – ordinary, mediocre
patient – impatient
polite, civilized, well-mannered – impolite, rude, ill-mannered
positive – negative
possible, probable, likely – impossible, improbable, unlikely
previous, preceding, former – next, following
primary – secondary
proper, appropriate, suitable, fitting – improper, inappropriate, unsuitable
proud, arrogant, haughty – modest, humble
real, genuine, authentic – artificial, fake, fictitious
reasonable, sensible, logical – unreasonable, illogical, absurd, crazy, foolish, ridiculous
reliable, dependable – unreliable
respectable, reputable – notorious, infamous
rich, wealthy, well-to-do – poor
right – left
right, correct, true – wrong, incorrect, not true, false, erroneous
round – square, triangular
safe, secure – unsafe, insecure, dangerous
sharp, keen, acute – dull, blunt
shy, timid – confident, self-confident
sick, ill – healthy
simple – complex, complicated
strong, tough, sturdy – weak, delicate, fragile
stubborn, obstinate – compliant, docile, obedient
sufficient, adequate, enough – insufficient, inadequate, not enough
suitable, fitting, appropriate – unsuitable, inappropriate
surprising, amazing – ordinary
sweet – sour, bitter, salty
tall – short
tense – relaxed
thick, fat – thin, slim, slender
tight – loose
true – false, deceptive, misleading
understandable, clear, intelligible, comprehensible – unclear, not clear, unintelligible, incomprehensible
useful, helpful – useless
whole, entire, complete, full, total – incomplete, limited, partial
young – middle-aged, old, elderly