/ Thesaurus / O Synonyms of ondatra zibethica Find synonyms for: Noun1. muskrat, musquash, Ondatra zibethica, rodent, gnawerusage: beaver-like aquatic rodent of North America with dark glossy brown furWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: profiterole Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language