Synonyms for musty Found 4 synonyms across 2 meanings for “musty”. covered with or smelling of mold (adj) moldymouldy stale and unclean smelling (adj) fustyfrowsty Explore Related Words Rhymes with mustySynonyms for moldySynonyms for mouldySynonyms for fustySynonyms for frowsty Synonym Finder | Rhyme Finder | Poetry Editor