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Region: General | Usage example: The manager caught him in the act of altering the figures

Catch someone in the act

Meaning

Discover someone while they are doing something wrong

Usage

Used when timing is critical for proof

Origin & History

Origins and dates here are approximate summaries. Many idioms have disputed or unknown origins, and not every date has been checked against a historical dictionary, so treat specific dates and stories as a starting point rather than a citation.

Legal phrase describing a suspect caught red-handed

Used since the 19th century in law enforcement

Related Idioms

Catch someone off guard

Surprise someone when they are unprepared.

Give someone the cold shoulder

Ignore or snub someone intentionally.

Let someone off the hook

Release someone from responsibility.

More Idioms

Break the ice

To do or say something to relieve tension or get conversation going in a social situation.

Cut to the chase

Skip ahead to the most important or exciting part of something.

The ball is in your court

It is now your turn to take action or make a decision.

Throw in the towel

To concede defeat or admit a struggle isn't worth continuing.