noun
a sudden or unexpected change or reversal, especially one that is intended to deceive or trick
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The magician performed a switcheroo with the cards, leaving the audience in awe.
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I pulled a switcheroo on my friends by pretending to leave and then surprising them at the party.
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Let's do a switcheroo and swap our lunch items today.
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She thought she had the upper hand in the negotiation, but he pulled a switcheroo and came out on top.