/ Thesaurus / M Synonyms of mud stain Find synonyms for: Noun1. mud stain, stain, discoloration, discolourationusage: a stain produced by mudWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: effervescent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language