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Definitions

vouch

[vouch] / vaʊtʃ /
VERB
give assurance
Synonyms
STRONG
affirm assert asseverate assure avert avow back certify confirm contend corroborate cosign declare guarantee maintain okay predicate profess prove sponsor substantiate support testify uphold verify vow warrant witness
WEAK
act as a witness answer for 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
Antonyms
STRONG
break condemn contradict deny desert disapprove disavow disclaim discourage discredit disprove invalidate neglect oppose refuse refute reject repudiate veto
WEAK
renounce

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

I’m not sure I could vouch for it if I dug deep into his personal beliefs or anything like that.

From Los Angeles Times • Mar. 18, 2026

I use Claude, ChatGPT, and Google’s Gemini every day, and I can vouch for the truth in the Claude warning.

From Barron's • Feb. 6, 2026

What so often matters most these days is the size of an actor’s following or which established person can vouch for them.

From Salon • Jan. 24, 2026

I was not the only new “recruit”—there was David, in plaid pants, plus two friends of an existing member, who needed no introduction, as they had someone to vouch for them.

From Slate • Oct. 27, 2025

“If we were still at the ship-breaking yards, I’d vouch you onto light crew. ”

From "Ship Breaker" by Paolo Bacigalupi

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.