/ Thesaurus / S Synonyms of salt flat Find synonyms for: Noun1. salt flat, salt plain, flatusage: a flat expanse of salt left by the evaporation of a body of salt waterWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: labyrinth Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language