← BackshareGuessfoul mouthed/faʊl maʊðd/adjectiveUsing rude, offensive, or profane language.The coach warned the foul-mouthed player to watch his language.The movie was criticized for its foul-mouthed characters.She was known for being foul-mouthed, often shouting curses at other drivers.SynonymscrudeprofanevulgarAntonymscleanpolite