/ Thesaurus / A Synonyms of aythya americana Find synonyms for: Noun1. redhead, Aythya americana, duckusage: North American diving duck with a grey-and-black body and reddish-brown headWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: loathe Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language