/ Thesaurus / B Synonyms of blackmouth bass Find synonyms for: Noun1. blackmouth bass, Synagrops bellus, sea bassusage: small marine fish with black mouth and gill cavityWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language