Breadcrumb Home > Thesaurus > M Synonyms of mississippi Find synonyms for: Noun 1. Mississippi, Mississippi River usage: a major North American river and the chief river of the United States; rises in northern Minnesota and flows southward into the Gulf of Mexico 2. Mississippi, Magnolia State, MS usage: a state in the Deep South on the gulf of Mexico; one of the Confederate States during the American Civil War WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of mississippi (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 12 Steps to a New Year New Year's Resolution to Slim Down? Martin Luther King Speeches Books of the Bible: Old Testament Books in Order ✖ Related Content Daily Word Quiz: cognoscenti Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language