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Certain. Sure, infallible, positive, undeniable, unfailing; assured, fixed, regular, established; true, accurate, unmistakable.
Ant. Dubious, irregular, undecided, doubtful, exceptional, casual.
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Certainty. Assurance, conviction, confidence, positiveness.
Ant. Hesitation, doubt, misgiving, conjecture, indecision.
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Certify. Acknowledge, avow, declare, prove, inform, assure, attest.
Ant. Disavow, misinform, disprove.
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Cessation. Stop, pause, abeyance, suspension, lull, respite.
Ant. Incessancy, continuity, continuance.
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Chafe. Vex, irritate, gall, rub, chagrin, tease, worry, harass, annoy, fret; rage, fume; nettle, exasperate, anger.
Ant. Soothe, coax, calm, console, humor; submit, endure, succumb.
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Chaff. Banter, badinage, nonsense, frivolity; refuse, trash.
Ant. Sense, reason, pith, gist, seriousness, substance.
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Chagrin. Humiliation, shame, mortification, confusion, discomposure, dismay, disappointment.
Ant. Delight, glory, exultation, triumph, rejoicing.
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Challenge, v. Dare, brave, defy; demand, require, claim; object to, take exceptions.
Ant. Pass, allow, grant, concede, permit; retract, retreat.
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Champion. Defender, protector, vindicator; hero, winner, chief, victor, combatant.
Ant. Renegade, traitor, deserter, coward; adversary, opponent.
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Chance. Hazard, casualty, accident, luck, fortune.
Ant. Law, sequence, purpose, design, intention, causation, certainty.
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Change, n. Transformation, variation, transition, conversion, innovation, diversion, novelty, variety, vicissitude, alteration, transmutation.
Ant. Fixity, identity, constancy, uniformity, firmness, permanence, persistence, steadiness.
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Change, v. Alter, transform, vary, turn, veer, shift, qualify, modify, exchange, diversify, convert, metamorphose, substitute.
Ant. Continue, endure, stay, hold, keep, retain, abide, remain, persist.
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Changeless. Stationary, undeviating, immovable, reliable, consistent.
Ant. Fluctuating, vacillating, capricious, variable, plastic.
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Character. Mark, figure, sign, symbol, emblem, letter; constitution, nature, disposition, turn, cast, bent; temperament, moral qualities, personality, traits, habits; person, individual; repute, reputation.
Ant. Anonymousness; disrepute; vagueness; indefiniteness.
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Characteristic. Attribute, peculiarity, trait, sign, indication, mark, feature, distinction, singularity, property, idiosyncrasy.
Ant. Nondescript, generality, miscellany, commonness.
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Charge, v. Load, freight, burden; intrust; impute, ascribe; accuse, impeach, incriminate, arraign, indict; command, order, require, bid; attack, assault.
Ant. Free, acquit, liberate, discharge.
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Charitable. Benign, bountiful, liberal; lenient, mild, considerate.