1 : tastelessly showy; "a flash car"; "a flashy ring"; "garish colors"; "a gaudy costume"; "loud sport shirts"; "a meretricious yet stylish book"; "tawdry ornaments"
2 : not characteristic of the upper classes especially in language use
3 : not challenging; dull and lacking excitement; "an unglamorous job greasing engines"
4 : lacking refinement or cultivation or taste; "he had coarse manners but a first-rate mind"; "behavior that branded him as common"; "an untutored and uncouth human being"; "an uncouth soldier--a real tough guy"; "appealing to the vulgar taste for violence"; "the vulgar display of the newly rich"
5 : being or characteristic of or appropriate to everyday language; "common parlance"; "a vernacular term"; "vernacular speakers"; "the vulgar tongue of the masses"; "the technical and vulgar names for an animal species"
