up (one's) sleeve

Of a plan or advantage, kept in secret so it can be utilized if and when it is required. A reference to cheating at a card game by hiding a favorable card up one's sleeve My stamina is the ace up my sleeve for this race—the other runners don't stand a chance! I've got a few tricks up my sleeve if he decides to pursue legal action against me.

Common Names:

Name	Pronounced	Usage
Josefina	ho-se-FEE-nah (Spanish), zhoo-zə-FEE-nə (Portuguese), yoo-se-FEE-nah (Swedish)	Spanish, Portuguese, Swedish
Victor	VIK-tər (English), veek-TOR (French)	English, French, Portuguese, Romanian, Dutch, Swedish, Late Roman
ÁDÁM	AH-dahm	Hungarian
Ivy	['aivi]
Zayn	-	Arabic
Gjord	-	Swedish (Rare)