Synonyms for filthy Found 6 synonyms across 3 meanings for “filthy”. disgustingly dirty (adj) foulnasty vile (adj) dirtylousy characterized by obscenity (adj) cruddysmutty Explore Related Words Rhymes with filthySynonyms for foulSynonyms for nastySynonyms for dirtySynonyms for lousySynonyms for cruddy Synonym Finder | Rhyme Finder | Poetry Editor