:the act of ignoring someone because you are angry at him or her置之不理；冷处理
I told him that I thought he was crazy and got the silent treatment for the rest of the day. [=he refused to talk to me for the rest of the day]我告诉他我觉得他疯了，接下来的一天他都没理我。
Whenever she gets mad at me, she gives me the silent treatment. [=she does not speak to me]她一生我的气就对我不予理睬。