indelicate
adj. 无教养的；不文雅的；下流的，粗俗的
例句
She really could not touch upon such an indelicate subject.
她实在不想触碰如此令人窘迫的话题。
《柯林斯英汉双解大词典》
It is indelicate of you to mention her marriage problem.
你提到她的婚姻难题，这很失礼。
He had flung a leg of lamb at some indelicate disturbing tutor.
他曾经在那儿把一只羊腿扔到一个粗鄙惹人的导师的身上。
