Vouch

مترادف و متضاد vouch

1. verb give assurance
   Synonyms: act as a witness, affirm, answer for, assert, asseverate, assure, attest to, avert, avow, back, bear testimony, be responsible for, certify, confirm, contend, corroborate, cosign, declare, get behind, give an affidavit, guarantee, maintain, okay, predicate, profess, prove, put forth, rubber-stamp, say so, sign for, sponsor, stand up for, substantiate, support, swear to, swear up and down, testify, uphold, verify, vow, warrant, witness
   Antonyms: deny, disavow, refute, reject, renounce