/ Thesaurus / H Synonyms of hydromys Find synonyms for: Noun1. Hydromys, genus Hydromys, mammal genususage: water ratsWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: ontiguous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language