vouch
131certify — Synonyms and related words: OK, accept, accredit, acknowledge, affirm, allege, amen, and candle, approve, ascertain, assert, assert under oath, asseverate, assure, attest, authenticate, authorize, autograph, aver, avouch, avow, back, back up, be… …
132guarantee — Synonyms and related words: Bible oath, and candle, arm, armor, assert under oath, assurance, assure, attest, avouch, avouchment, avow, back, bail, bailsman, be sponsor for, bless, bond, bondsman, book, certify, champion, cloak, compass about,… …
