1、not politeTalking like that is not polite.那样谈话不礼貌。

2、rude（ly）It's rude to stare at people.盯着看人不礼貌。He spoke very rudely.他讲话很不礼貌。

3、bad mannersIt 's bad manners to eat like that.那样吃东西很不礼貌。