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動詞

Definition

To catch people having an extramarital affair red-handed; to blackmail someone caught in a sex trap.

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How it's used

Originating from the practice of using a tethered chicken to lure a wild bird into a trap, this idiom specifically refers to a setup where a person is lured into a compromising situation. It implies a premeditated scheme, often involving blackmail or extortion, rather than just accidentally discovering an affair. The term carries a strong sense of deception and predatory behavior.

Examples

They set a trap to catch him in an affair, hoping to blackmail the man.
Don't go trying to catch people in affairs, be careful not to bring trouble upon yourself.

Common phrases

to set a trap to catch someone in an affair

Common mistake

Learners often mistake this for a general term for catching someone cheating, but it specifically emphasizes the trap or setup aspect. It is not used to describe simply walking in on a partner who is being unfaithful.

Grammar color guide

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