We can't forgive his impoliteness.

我们不能原谅他的粗鲁。

His manner verges on impoliteness.

他的态度近乎不礼貌。

She complained to me about his impoliteness.

她对我抱怨他的无礼。

My tolerance of your impoliteness is limited.

我对你的无礼的忍耐是有限的。

He must apologize to me for his impoliteness.

他必须要为他的无礼向我道歉。