1. （男子或男孩）粗野的，粗鲁的
If you describe a man or a boy as loutish, you are critical of them because their behaviour is impolite and aggressive.
1. ill-mannered and coarse and contemptible in behavior or appearance
e.g. was boorish and insensitive
the loutish manners of a bully
her stupid oafish husband
aristocratic contempt for the swinish multitude