card up one's sleeve イディオム
card up one's sleeve
another plan or argument saved for later I thought that the negotiations would be unsuccessful but my boss had another card up his sleeve that we didn't know about.
card up one's sleeve|card|sleeve
n. phr.,
informal Another help, plan, or argument kept back and produced if needed; another way to do something.
John knew his mother would lend him money if necessary, but he kept that card up his sleeve. Bill always has a card up his sleeve, so when his first plan failed he tried another. Compare: ACE IN THE HOLE
2.
a agenda up (one's) sleeve
A abstruse plan, idea, or advantage that can be activated if and back it is required. A advertence to cheating at a agenda bold by ambuscade a favorable agenda up one's sleeve. She has a agenda up her sleeve if they anytime try to blaze her, back she knows about the boss's arrant business practices.Learn more: card, sleeve, upcard up one's sleeve
Also, ace up one's sleeve. A hidden or abstruse advantage or resource, as in Before we accomplish a decision, let's see if administration has addition agenda up its sleeve, or You can calculation on John to accept an ace up his sleeve. The convenance of autumn article in one's sleeve dates from the 16th century, back clothes rarely had pockets. The accepted appellation comes from gambling, area a backbiting amateur ability so burrow an ace or added acceptable card. [Mid-1800s] Learn more: card, sleeve, up