Give you the cold shoulder

Generated image of a cat giving a man the cold shoulder
To give someone the cold shoulder means deliberately ignoring a person or treating them in an unfriendly way.

The phrase appeared in English in the early 1800s. One explanation links it to the idea of offering a cold piece of meat instead of a warm meal to an unwelcome guest. It eventually came to mean quiet rejection.

After the argument, she gave him the cold shoulder all evening.