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ace up one's sleeve

From Wiktionary, the free dictionary

English

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Etymology

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From the dishonest hiding of a high-value ace card for use during play, e.g. in the game of poker.

Pronunciation

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Noun

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ace up one's sleeve (plural aces up one's sleeve)

  1. (idiomatic) A surprise advantage of which others are not aware.

Synonyms

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Translations

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