/ Thesaurus / E Synonyms of extensor muscle Find synonyms for: Noun1. extensor muscle, extensor, skeletal muscle, striated muscleusage: a skeletal muscle whose contraction extends or stretches a body partWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: labyrinth Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language