/ Thesaurus / C Synonyms of coosa Find synonyms for: Noun1. Coosa, Coosa Riverusage: river that rises in northwestern Georgia and flows southwest through eastern Alabama to join the Tallapoosa River near Montgomery and form the Alabama RiverWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: tenacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language