Pocket Thesaurus
Synonyms of vouch
back, corroborate, vow, sponsor, witness, guarantee, contend, uphold, prove, verify, support, certify, testify, maintain, warrant, predicate, avow, okay, avert, assert, affirm, substantiate, confirm, assure, asseverate, profess, declare, answer for, act as a witness, attest to, be responsible for, bear testimony, get behind, give an affidavit, put forth, rubber-stamp, say so, sign for, stand up for, swear to, swear up and down
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