/ Thesaurus / M Synonyms of masquerade costume Find synonyms for: Noun1. fancy dress, masquerade, masquerade costume, costume, disguiseusage: a costume worn as a disguise at a masquerade partyWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language