/ Thesaurus / B Synonyms of bass horn Find synonyms for: Noun1. bass horn, sousaphone, tuba, brass, brass instrument, bassusage: the lowest brass wind instrumentWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: aversion Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language