keep (one's) lips sealed

To not say anything (about something); to keep (something) a secret. Please keep your lips sealed about our engagement, we aren't ready to tell everybody just yet.

Common Names:

Name	Pronounced	Usage
Mahmut	-	Turkish
PÁLa	POW-lah	Icelandic
Gerd (2)	YERD (Swedish), GERD (English)	Swedish, Norwegian, Danish, Norse Mythology
Adi (1)	ah-DEE	Hebrew
Kishor	-	Indian, Hindi, Marathi, Tamil, Telugu, Nepali
Tamrat	-	Eastern African, Amharic