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Region: General | Usage example: The sudden announcement caught everyone off guard.

Catch someone off guard

Meaning

Surprise someone when they are unprepared.

Usage

Used when news or questions arrive unexpectedly.

Origin & History

Origin notes can vary by region and source; this page gives the commonly reported explanation and usage context.

Military image of attackers catching guard forces at a disadvantage.

Adapted into everyday speech for any unexpected moment.

Related Idioms

Catch someone in the act

Discover someone while they are doing something wrong

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.