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Related to avouch: defended, foreseeing, recreated, instigating, gloriousness
avouch(Avow), verb acknowledge, affirm, affirm with confidence, allege, allege as a fact, assert, assert peremptorily, assert positively, assert under oath, attest, aver, bear witness, certify, confirm, confirm by oath, contend, declare, declare openly, declare with positiveness, depose, maintain, make an assertion, make open affirmation, make solemn affirmation, proclaim, profess, pronounce, propound, put in an affidavit, reaffirm, reassert, solemnly affirm, state, state as true, state with conviction, swear, swear an oath, swear the truth, testify, vouch, vow
avouch(Guarantee), verb assume responsibility for, assure, authenticate, back, be answerable for, be surety for, endorse, ensure, give assurance, insure, pledge, pledge one's word, sponsor, underwrite, verify, vouch for, warrant
See also: adduce, affirm, allege, assert, assure, attest, avow, bear, certify, claim, corroborate, depose, evidence, maintain, posit, profess, promise, swear, testify, verify, vouch, vow