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talk to the hand

A rude interjection meant to interrupt and dismiss what another person is saying. (Sometimes written or spoken in longer forms, such as, "talk to the hand, because the face isn't listening," or the like.) Dad: "Sarah, would you mind cleaning up the—" Sarah: "Talk to the hand, dad! I've got too much going on to be dealing with chores around the house!" All of us were aghast when Jonathan turned to the police officer and said, "Talk to the hand, 'cause the face ain't interested!"
See also: hand, talk

disappointed at someone or something

 and disappointed in someone or something
becoming sad because of someone or something. I am really disappointed at what you did. I am very disappointed in you. That was a terrible thing to do. They were disappointed in the outcome.
See also: disappointed

because of something

as a result of something due to something The flight was delayed because of bad weather.
See also: because, of