The phrase "four-letter word" conjures up a host of negative connotations. However, there are several less vulgar synonyms that can convey the same meaning. Some alternative phrases include "expletive," "curse word," "profanity," "vulgar language," and "swear word." While each of these terms may have a slightly different connotation, they all refer to language that is typically considered offensive or taboo. Whether we're trying to clean up our language or simply looking for a more eloquent way to refer to profanity, these synonyms provide a useful vocabulary for anyone looking to expand their linguistic repertoire.