/ Thesaurus / B Synonyms of bad mouth Find synonyms for: Verb1. badmouth, malign, traduce, drag through the mud, defame, slander, smirch, asperse, denigrate, calumniate, smear, sully, besmirchusage: speak unfavorably about; "She badmouths her husband everywhere"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: philanthropy Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language