Vulgar means lacking in taste, refinement, or decency, or spoken by the common people. It can also refer to a form of a language, such as Latin vulgar . See synonyms, translations, and usage examples. Vulgar definition : characterized by ignorance of or lack of good breeding or taste.. See examples of VULGAR used in a sentence. Someone who's vulgar has bad taste, and could also be called unrefined or unsophisticated. Your snobby neighbor might mutter about your family's vulgar taste if you paint your house with hot pink stripes. VULGAR definition : 1. not suitable, simple, dignified or beautiful; not in the style preferred by the upper classes of…. Learn more.