/ Thesaurus / C Synonyms of concavo concave Find synonyms for: Adjective1. biconcave, concavo-concave, concave (vs. convex)usage: concave on both sidesWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: candid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language