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
Ione	ie-O-nee (English), IE-o-nee (English), ie-ON (English)	Greek Mythology, English
Salwah	-	Arabic
Royse	-	Medieval English
Christer	KRIS-ter (Swedish)	Swedish, Danish
Zora	-	Czech, Slovak, Croatian, Serbian, Slovene, Bulgarian, Macedonian
Llew	-	Welsh, Welsh Mythology