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ace in the hole

ace in the hole

11 6.1
A hidden advantage you keep until you need it
  • idiom
  • Informal
: as en la manga
  • The detective kept the evidence as an ace in the hole for the trial.
  • got an ace in the hole
  • still has an ace in the hole

His shaved knuckle, his, as we say, ace in the hole.

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Examples

Synonyms

trump card
vsace in the hole
11 3.8

A strong advantage that gives someone a winning edge

keeps the same edge idea but adds the sense of secrecy
back pocket
vsace in the hole
  • Informal
6 4.2

A plan kept ready to use in case of need

is the same reserve idea but implies a secret advantage in store
an ace up someone's sleeve
vsace in the hole
  • Informal
3 5.8

A secret advantage someone keeps to use when needed

is the same idea but expressed with another idiomatic form
hole card
vsace in the hole
1 8.1

A secret advantage saved to use later

is the same reserved advantage but expressed with a different term
ace card
vsace in the hole
  • Informal
1 4.7

A strong advantage kept for an important moment to help win

is similar but stresses secrecy and reserve rather than general value
trick up (one's) sleeve
vsace in the hole
  • Informal
6.5

A secret plan kept to use as a surprise when needed

is the same concept but uses a different informal phrase
ace up one's sleeve
vsace in the hole
  • Informal
7.0

A hidden advantage that someone keeps to use later

is the same notion but named with a different common phrase
back-pocket strategy
vsace in the hole
  • Informal
7.4

A secret plan you keep to use if the main plan fails

is similar but focuses more on being secretly kept for advantage
in one's back pocket
vsace in the hole
  • Informal
8.1

Someone keeps something secret to use later for an advantage

is similar but highlights being an advantage kept for a moment
secret weapon in one's hip pocket
vsace in the hole
  • Informal
7.6

A helpful idea or tool kept secret to use when needed

is alike but stresses being secretly held in reserve
trick in one's hip pocket
vsace in the hole
  • Informal
8.2

A secret plan kept to use later when you need it

is the same reserved strategy idea but labelled with different wording

Antonyms

81 5.7

A person or thing that causes problems or puts someone at a disadvantage

How Advantageous

ace in the hole
  • Informal
11 6.1
advantage
∞ 2.8

Surface Forms

Morphology

ace + in + the + hole

The headword 'ace' (a top card or expert) combined with 'in' + 'hole' (suggesting something hidden or set aside) gives a partial clue toward a concealed advantage, so the parts partially map onto the idiomatic meaning. However, the specific sense comes from a poker metaphor (an ace hidden as a winning card) and is not fully predictable to a B1 learner without cultural or idiomatic exposure.

Etymology

Ace in the hole comes from old card games where a player had a hidden ace called the hole card. Because that hidden ace could win the game, the phrase now means 'a secret advantage' kept until it is needed.