Give personal assurance; guarantee.
Give surety or assume responsibility:
— I vouch for the quality of my products.
Summon (a vouchee) into court to warrant or defend a title.
Give supporting evidence.
Moby thesaurus: acknowledge, affirm, affirmance, affirmation, allegation, allege, and candle, announcement, annunciation, assert under oath, assertion, asseverate, asseveration, assure, attest, aver, averment, avouch, avouchment, avow ... show more.
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