/ Thesaurus / G Synonyms of grand river Find synonyms for: Noun1. Grand Riverusage: a river in southern Michigan that flows northwest to empty into Lake MichiganWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: topography Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language