Learner's definition of VULGAR
[more vulgar; most vulgar]
1 disapproving : not having or showing good manners, good taste, or politeness
He was a vulgar man.
She had a coarse, vulgar laugh.
vulgar table manners
a vulgar [=tasteless] display of wealth
I will not tolerate such vulgar language in my home.
2 : relating to the common people or the speech of common people