SYN: Reply, response, counter-argument, confutation, acceptance, (as of a challenge), tally, counterpart, solution, vindication, apology, exculpation, defense, rejoinder, repartee, retort.
ANT: Challenge, question, defiance, summons, interrogation, query.
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KEY: Answerable.
SYN: Liable, amenable, accountable, responsible, correspondent, agreeing.
ANT: Independent, unanswerable, irresponsible, different, unsuitable, disagreeing, dissimilar.
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KEY: Antagonism.
SYN: Hostility, opposition, animosity, enmity.
ANT: Amity, alliance, association.
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KEY: Antagonist.
SYN: Adversary, opponent, rival, competitor, foe, enemy.
ANT: Aider, abettor, accomplice, accessory, ally.
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KEY: Antagonistic.
SYN: Adverse, opposing, inimical, hostile, repugnant, contrary.
ANT: Favoring, aiding, harmonious, friendly, agreeable to.
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KEY: Antecedence.
SYN: Anteriority, priority, precursorship, premonition, Introduction, preparation, pre-existence.
ANT: Posteriority, subsequence, succession, sequel, supervention, consequence.
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KEY: Antecedent, [See ANTERIOR].
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KEY: Anterior.
SYN: Prior, foregoing, antecedent, previous, precursive, precedent, earlier, Introductory, preliminary, former.
ANT: Posterior, later, subsequent, consequent, succeeding.
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KEY: Anticipate.
SYN: Forestall, prejudge, expect, foretaste, apprehend, prevent, prearrange, prepare, prejudge, meet, obviate, intercept, forecast.
ANT: Remember, recollect, remedy, recall, undo, cure, misapprehend.
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KEY: Anticipation.
SYN: Prevention, expectation, forestallment, awaiting, preoccupation, preconception, foresight, forethought, foretaste, prelibation, preclusion, pregustation, antepast, forecast, provision.
ANT: Surprise, unpreparedness, Un-expectedness, inexpectation, actual enjoyment, non-expectation, realization, consummation.
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KEY: Antipathy.
SYN: Repugnance, dislike, hatred, detestation, contrariety, aversion, distaste, uncongeniality, antagonism, hostility, opposition, abhorrence.
ANT: Sympathy, kindliness, congeniality, fellow-feeling, affinity, harmony.
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KEY: Antiquated.
SYN: By-gone, quaint, old-fashioned, obsolete.
ANT: Fashionable, modish, stylish, modern.
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KEY: Antique.
SYN: Archaic, ancient, ancestral.
ANT: Modern, recent, new-fangled.
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KEY: Antithesis.