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ace up one's sleeve

eɪs ʌp wʌnz sliːv

Sports
neutral
intermediate
Literally:
An ace playing card hidden in one's shirt sleeve

What does "ace up one's sleeve" mean?

  1. A secret advantage or resource kept in reserve
  2. A hidden strategy or skill that gives an advantage

Examples

  • The lawyer had an ace up his sleeve—a surprise witness.
  • I've got an ace up my sleeve for the final negotiation.
  • She seemed defeated, but she had an ace up her sleeve.

Origin

From card game cheating, where dishonest players would hide an ace in their sleeve to use at a crucial moment. The ace is typically the highest-value card. The phrase emerged in the 19th century with the popularity of card games.

How to use it

Often used in competitive situations like negotiations, sports, or business. The phrase implies strategic advantage held in reserve.

Similar expressions

trump card
secret weapon
hidden advantage

Opposites

no cards left to play
out of options

Related idioms

  • no pain no gain

    Success requires hard work and sacrifice

  • ball is in your court

    It's your turn to take action or make a decision

  • like riding a bicycle

    A skill that, once learned, is never forgotten

  • drop the ball

    To fail to do something important; to make a mistake

  • level playing field

    A situation where everyone has an equal opportunity

  • on the ball

    Alert and competent

Use it in a practice answer

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