a. 粗野的, 粗鄙的

[ adj ]
ill-mannered and coarse and contemptible in behavior or appearance
<adj.all>
was boorish and insensitivethe loutish manners of a bully
her stupid oafish husband
aristocratic contempt for the swinish multitude

Boorish \Boor"ish\, a.
Like a boor; clownish; uncultured; unmannerly. --
{Boor"ish*ly}, adv. -- {Boor"ish*ness}, n.

Which is in truth a gross and boorish opinion.
--Milton.