keep one's mouth shut

Be quiet; don't reveal confidential information. For example, The teachers told us to keep our mouths shut during the entire presentation, or You can't tell Carol anything; she's incapable of keeping her mouth shut. Also see hold one's tongue.

Common Names:

Name	Pronounced	Usage
Eszti	ES-tee	Hungarian
Ali	['a:li]
Nielsen	['nilsən]
Anni	AHN-nee	Finnish
Nyarai	-	Southern African, Shona
Reynold	REN-əld	English