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
Arantzazu	-	Basque
Neophytos	-	Ancient Greek
Chifundo	chee-FUWN-do	Southern African, Chewa
Roza (1)	RO-zah (Russian)	Russian, Slovene, Bulgarian, Macedonian
Feibush	-	Yiddish
I'timad	-	Arabic