/ Thesaurus / A Synonyms of antagonistic muscle Find synonyms for: Noun1. antagonistic muscle, muscle, musculususage: (physiology) a muscle that opposes the action of another; "the biceps and triceps are antagonistic muscles"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: languid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language