Breadcrumb Home > Thesaurus > O Synonyms of opera glasses Find synonyms for: Noun1. binoculars, field glasses, opera glasses, optical instrumentusage: an optical instrument designed for simultaneous use by both eyesWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. ✖ Related Content Daily Word Quiz: prandial Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language