Definition & Meaning of "vulgaris"in English

What is the origin of the term "vulgaris" and how is it used?

"Vulgaris" is a slang term for a person regarded as common, low-class, or unrefined. It comes from the Latin word vulgaris, meaning "common" or "of the masses," and was adopted into English slang to label someone as crude or ordinary in behavior or taste. The term is used in informal, often mocking or disdainful contexts, sometimes humorously among peers. It is mildly derogatory, context-dependent, and less offensive than most crude insults.