(something) up (your) sleeve

something secret you can use.

If this plan doesn't work out I've still got a few ideas up my sleeve.

Usage notes: ften used in the forms the card up your sleeve or the ace up your sleeve - a secret advantage you can use: That recommendation from my teacher was the ace up my sleeve.

• down on luck
• down on someone
• down on something
• down on your luck
• down the drain
• Down the hatch!
• down the line
• down the pike
• down the road
• down the toilet
• down the tube
• down the tubes
• down-to-earth
• down tools
• down to the wire
• Down Under
• do you have the time
• do you know something
• Do you mind!
• do you mind
• do your best
• do your bidding
• do your bit
• mind your own business
• Mind your own business!