/ Thesaurus / T Synonyms of thecodont reptile Find synonyms for: Noun1. thecodont, thecodont reptile, archosaur, archosaurian, archosaurian reptileusage: presumably in the common ancestral line to dinosaurs and crocodiles and birdsWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: quandary Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language