keep something quiet
US /kiːp ˈsʌmθɪŋ ˈkwaɪət/
UK /kiːp ˈsʌmθɪŋ ˈkwaɪət/

1.
tenerlo segreto, non dirlo a nessuno
to keep something secret or not tell anyone about it
:
•
Can you keep this quiet for a while?
Puoi tenerlo segreto per un po'?
•
We need to keep this quiet until the official announcement.
Dobbiamo tenerlo segreto fino all'annuncio ufficiale.