have a card up sleeve

have a card up your sleeve

to have an advantage that other people do not know about I still had a card up my sleeve in the form of a letter from his father.

Name	Pronounced	Usage
ÖRjan	UUR-yahn	Swedish
Ji-Young	jee-yung	Korean
Archana	-	Indian, Hindi, Marathi, Telugu, Kannada, Malayalam, Tamil
Dagm&Aelig;R	-	Ancient Scandinavian
Dorota	daw-RAW-tah (Polish)	Polish, Czech, Slovak
Manami	mah-nah-mee	Japanese