hush up

hush up
hush up
to be quiet; to get quiet; to stop talking. •

You talk too much. Hush up!

I want you to hush up and sit down!

* * *
{v.} 1. To keep news of (something) from getting out; prevent people from knowing about. * /It isn't always easy to hush up a scandal./ 2. {informal} To be or make quiet; stop talking, crying, or making some other noise. - Often used as a command. * /"Hush up," Mother said, when we began to repeat ugly gossip./

Dictionary of American idioms. 2013.