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Action. Exercise, motion, movement, deed, performance; agency, force, operation; battle, conflict; gesture; representation, play; subject, plot; lawsuit, case.
Ant. Inertia, torpor, languor; quiescence, rest, passiveness; harmony, truce, peace.
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Active. Agile, brisk, alert, lively, quick, prompt, ready, spry; industrious, energetic, busy, diligent.
Ant. Dull, idle, indolent, lazy, quiet, slow, stupid.
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Actual. Real, true, genuine, certain, absolute, positive, veritable, substantial; present, sensible, perceptible.
Ant. Possible, fictitious, supposititious, virtual, theoretical, hypothetical, conjectural.
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Acumen. Discernment, penetration, keenness, shrewdness, insight, sharpness, sagacity, acuteness.
Ant. Dulness, obtuseness, stupidity, bluntness.
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Acute. Sharp, pointed, keen, shrewd; violent, intense; high, sudden, severe, distressing; subtile, ingenious, sagacious, discerning.
Ant. Dull, blunt, obtuse, stupid, heavy; chronic; stolid.
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Adaptation. Adjustment, fitness, conformity, suitableness, aptness, harmony.
Ant. Incompatibility, incongruity, misfit, discord.
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Add. Sum up, increase, adjoin, append, attach, augment, enlarge, amplify, annex, affix.
Ant. Deduct, subtract, lessen, reduce, remove, diminish.
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Addicted. Habituated, disposed to, inclined, prone, attached to, devoted, given over to, wedded to.
Ant. Averse, disinclined, unaccustomed, indisposed, divorced from.
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Addition. Accession, enlargement, increase, extension, accretion, augmentation, adjunct.
Ant. Subtraction, decrease, diminution.
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Address, n. Courtesy, manners, politeness, tact, ingenuity, dexterity, discretion, adroitness; discourse, harangue, oration, lecture, speech, appeal, request, suit, solicitation.
Ant. Clumsiness, rudeness, stupidity, unmannerliness, folly; refusal.
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Address, v. Accost, approach, court, greet, hail, salute, speak to.
Ant. Avoid, elude, ignore, shun, cut, pass, overlook.
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Adduce. Offer, present, advance; cite, quote, introduce, name, mention; allege.
Ant. Withdraw, except, deduct, suppress, retract.
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Adept. Expert, master, proficient, genius, veteran, professor.
Ant. Novice, tyro, blunderer, inexpert.
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Adequate. Equal, competent, fitted, qualified, suitable, sufficient, capable, adapted, satisfactory; proportionate, commensurate.
Ant. Inferior, poor, useless, worthless, unfit, incompetent.