not having or showing good taste; not polite, pleasant or well behaved 庸俗的；粗俗的；粗野的；不雅的 rude and likely to offend 粗野的；粗魯的；下流的 vulgar jokes 低俗的笑話
Word Originlate Middle English: from Latin vulgaris, from vulgus ‘common people’. The original senses were ‘used in ordinary calculations’ (surviving in vulgar fraction) and ‘in ordinary use, used by the people’ (surviving in vulgar tongue).