give (one) the silent treatment
To ignore or deliberately avoid talking to one due to being angry at them. Well, I must have done something wrong because he's been giving me the silent treatment all week.
give someone the silent treatment
If you give someone the silent treatment, you do not speak to them for a period of time because you are annoyed with them. He fully expected his mother to give him the silent treatment.
give somebody/get the ˈsilent treatment
refuse to talk to somebody, usually because you are angry with them; be treated in this way: Are you going to talk to me now, or are you still giving me the silent treatment?