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
Patroklos	-	Greek Mythology
Courtney	KORT-nee	English
Vergil	VUR-jəl	English
Magnhildr	-	Ancient Scandinavian
Sheryl	SHER-əl	English
Amadeus	ahm-ə-DAY-əs (English), ahm-ə-DEE-əs (English)	Late Roman