lips are sealed, one's

One will reveal nothing, especially about a secret. For example, You can trust me with the details of the lawsuit-my lips are sealed. [Early 1900s]

Name	Pronounced	Usage
Annukka	AHN-nook-kah	Finnish
Micheline	-	French
Waldeburg	-	Ancient Germanic
NgỌC	-	Vietnamese
Joaquima	-	Catalan
Trygve	-	Swedish, Norwegian, Danish