/ Thesaurus / R Synonyms of rockchuck Find synonyms for: Noun1. yellowbelly marmot, rockchuck, Marmota flaviventris, marmotusage: heavy-bodied yellowish-brown marmot of rocky areas of western North AmericaWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language