have an ace up your sleeve
idiom

To have a secret advantage or resource
  • 1During the negotiation, she had an ace up her sleeve that surprised everyone.
  • 2He always seems to have an ace up his sleeve when things get tough.
It means to have a hidden advantage or something special that can help you in a difficult situation. It's like having a secret weapon that you can use when you need it most. It gives you an edge over others.
Card
Remember, having an ace up your sleeve is like having a secret weapon, so use it wisely and strategically. Don't reveal it too soon or it may lose its effectiveness when you really need it.
at work
The Unexpected Promotion
William
I heard you got the promotion, Betty. Congratulations!
Betty
Thanks, William! I guess having that extra certification was like having an ace up my sleeve.
William
That makes sense. It definitely gave you an edge over the others.
Betty
Exactly, it was my secret weapon all along.
Show More…
Similar to "have an ace up your sleeve":
  • 1secret weapon
  • 2hidden advantage