/ Thesaurus / C Synonyms of cross thwart Find synonyms for: Noun1. thwart, cross thwart, crosspieceusage: a crosspiece spreading the gunnels of a boat; used as a seat in a rowboatWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: jaundice Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language