/ Thesaurus / G Synonyms of gill less Find synonyms for: Adjective1. abranchiate (vs. branchiate), abranchial, abranchious, gill-lessusage: having no gillsWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language