/ Thesaurus / G Synonyms of gros ventre Find synonyms for: Noun1. Hidatsa, Gros Ventre, Sioux, Siouanusage: a member of the Sioux people formerly inhabiting an area along the Missouri river in western North Dakota2. Hidatsa, Gros Ventre, Siouan, Siouan languageusage: a Siouan language spoken by the HidatsaWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: eccentric Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language