[mass noun]rude and inconsiderate behaviour 无礼,失礼,粗鲁 he was able to discourage visitors without obvious discourtesy. 他能在不会明显失礼的情况下让来访者却步。 ■[count noun]an impolite act or remark 无礼的举动;无礼的言辞 the fact that MPs were not kept informed was an extraordinary discourtesy. 让议员们蒙在鼓里是非常无礼的事情。