keep quiet!

listen to the pronunciation of keep quiet!
English - English
be quiet, quiet!, shut up!
remain silent

Granny is asleep, so keep quiet while you play.

To refrain from talking about something; to keep a secret

Remember it's a surprise party, so keep quiet about it.

refrain from divulging sensitive information; keep quiet about confidential information; "Don't tell him any secrets--he cannot keep his mouth shut!
keep quiet!