Definition of vouch :
1. To assert; to aver; to declare.
2. To back; to support; to confirm; to establish.
3. To bear witness; to give testimony or full attestation.
4. To call into court to warrant and defend, or to make good a warranty of title.
5. To call upon to witness; to obtest.
6. To call; to summon.
7. To warrant; to maintain by affirmations; to attest; to affirm; to avouch.
8. Warrant; attestation.
endorse, predicate, asseverate, swear, take a Bible oath, profess, contend, maintain, verify, aver, go bail on, protest, take affidavit, bear testimony, put forth, bear witness to, avow, undertake, kiss the Book
evince (part of speech: verb)
betoken, document, determine, evince, demonstrate, prove, corroborate, exemplify, establish, indicate, substantiate, connote, validate, observe, adduce, illustrate, certify, witness, manifest, confirm, avouch, attest, state, support, exhibit, testify, declare, authenticate, depose
guarantee (part of speech: verb)
- " Yes," he continued, " I am quite prepared to vouch for the identity of this gentleman as Lord Quorn." - "A Poached Peerage", William Magnay.
- At least I can vouch for two of them- one down Betty's nose and the other down mine! - "The Charm of Ireland", Burton Egbert Stevenson.
- " I should like to know it too," said I. " I can vouch for Captain Ashington's information," said Tiel briefly. - "The Spy in Black", J. Storer Clouston.