/ Thesaurus / B Synonyms of boat shaped Find synonyms for: Adjective1. boat-shaped, concave (vs. convex)usage: having a concave shape like a boatWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: sumptuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language