/ Thesaurus / V Synonyms of verifier Find synonyms for: Noun1. voucher, verifier, supporter, protagonist, champion, admirer, booster, friendusage: someone who vouches for another or for the correctness of a statementWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: rotund Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language