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
Isa (1)	-	Arabic
Heshel	-	Yiddish
RubÉN	roo-BEN	Spanish
Kosmas	-	Ancient Greek
Dmitriy	DMEE-tree	Russian
Oona	OO-na (Irish), O:-nah (Finnish)	Irish, Finnish