Meaning of the word "an ace up your sleeve" in English

What does "an ace up your sleeve" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

an ace up your sleeve

US /ən eɪs ʌp jʊər sliːv/
UK /ən eɪs ʌp jʊər sliːv/
"an ace up your sleeve" picture

Idiom

1.

a secret advantage or resource that can be used when needed

Example:
The politician had an ace up his sleeve for the debate.
She always keeps an ace up her sleeve for negotiations.
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