Breadcrumb Home > Thesaurus > O Synonyms of opera house Find synonyms for: Noun1. opera, opera house, theater, theatre, houseusage: a building where musical dramas are performedWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. ✖ Related Content Daily Word Quiz: deracinate Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language