When it comes to describing someone who uses profanity, there are a variety of synonyms available. Some of the most common include someone who curses, swears, or uses vulgar language. Other terms that may be used include someone who has a foul mouth, is potty-mouthed, or employs expletives. Depending on the context in which the term is being used, these synonyms can convey a range of different attitudes, from disapproval to humor. Overall, though, if you're looking for a way to describe someone who frequently uses profanity, there are plenty of colorful alternatives available.