/ Thesaurus / D Synonyms of duck billed Find synonyms for: Adjective1. duckbill, duck-billed, beaked (vs. beakless)usage: having a beak resembling that of a duck; "a duck-billed dinosaur"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: reclusive Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language