Pocket Thesaurus
Antonyms of affirm
repeat, confirm, ratify, insist, assert, maintain, profess, declare, guarantee, attest, predicate, avow, set, avouch, certify, pronounce, vouch, ice, testify, state, swear, asseverate, cinch, aver, clinch, okay, witness, nail down, cross heart, have a lock on, lock up, put on ice, rubber-stamp, say so, swear on bible, swear up and down
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