Definition
Not considered socially acceptable or appropriate behavior.
不合宜、不得体
Wearing sportswear to a formal event is not the done thing.
在正式场合穿着运动服是不合宜的。
Answering personal calls during a meeting is not the done thing.
在会议中接听私人电话是不恰当的。
Visiting someone's home without invitation is not the done thing.
未经邀请就拜访别人家是不礼貌的。