Breadcrumb Home > Thesaurus > E Synonyms of euphonium Find synonyms for: Noun 1. euphonium, bass horn, sousaphone, tuba usage: a bass horn (brass wind instrument) that is the tenor of the tuba family WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of euphonium (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Hanukkah Origins of the Christmas Holiday Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 Krampus: The Christmas Devil Kwanzaa ✖ Related Content Daily Word Quiz: anomie Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language