/ Thesaurus / S Synonyms of salt marsh Find synonyms for: Noun1. salt marsh, marsh, marshland, fen, fenlandusage: low-lying wet land that is frequently flooded with saltwaterWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: lyre Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language