A curser is someone who uses profanity or foul language in a loud and angry manner. Some synonyms for the word curser include swearer, blasphemer, foul-mouthed individual, expletive user, and potty-mouth. A curser is usually someone who is angry or frustrated and uses curse words to express their emotions. Other synonyms for the word curser include vulgar person, obscene language speaker, and cursing individual. While some people may express themselves through cursing, it is important to remember that using foul language can be offensive to others and may not be appropriate in certain settings such as public places or professional environments.