impoliteness 

英汉解释

n. 无礼；粗鲁

反义词

n.   niceness，politeness

参考例句

1. He must apologize to me for his impoliteness.
他必须就其粗鲁向我道歉。
2. He must apologize to me fir his impoliteness.
他必须对他的不礼貌向我道歉。
3. The old lady was very angry about the impoliteness the young man showed to her.
老夫人对这个年轻人对她表现出的无礼态度大为震怒。

英英解释

n.
  1. a discourteous manner that ignores accepted social usage