adj.不礼貌的，失礼的，粗鲁的

He was so discourteous to the waiter, it made everyone uncomfortable at the table.
他对服务员的态度非常不礼貌，让餐桌上的人都感到尴尬。
Her rude behavior was a clear example of discourtesy.
她的粗鲁行为就是不礼貌的典型例子。
His constant interruptions were highly discourteous.
他不断的打断别人，非常失礼。
She refused to acknowledge others' opinions, displaying a discourteous attitude.
她对他人意见置若罔闻，表现出无礼的态度。
The customer service representative's discourteous response left a bad impression on me.
客服人员的不耐烦回应给我留下了恶劣的印象。
He was discourteous to his colleagues, which led to a toxic work environment.
他对同事的不尊重导致了工作氛围变得恶劣。
In a polite society, such impoliteness is considered discourteous.
在有教养的社会里，这种行为被视为失礼。
His discourteous behavior towards his elders is not acceptable.
他对长辈无礼的行为是不能接受的。
Discourtesy in public places often reflects poorly on one's upbringing.
公共场所的不礼貌往往反映出一个人的教养问题。
Her discourteous treatment of her guests was a major faux pas.
她对待客人的无礼行为是一个严重的社交失误。