/ Thesaurus / G Synonyms of genus aythya Find synonyms for: Noun1. Aythya, genus Aythya, bird genususage: canvasback; redhead; pochard; etc.WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: apogee Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language