Foul invective is a term used to describe abusive, offensive, or insulting language. Although the use of foul invective should be avoided, there are several synonyms for it that are commonly used. Curse words, expletives, vulgarities, and profanities are some of the most common synonyms for foul invective. Other synonyms include obscenities, scurrilous language, vituperation, insults, and verbal abuse. Regardless of the synonym used, foul invective can be hurtful and offensive. It is important to use respectful language and communicate in a way that does not attack others or use language that may be considered inappropriate.