catch (one) in the act

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catch (one) in the act

To see, and perhaps apprehend, someone as they are doing something (often something nefarious). The police caught the robbers in the act of ransacking another house. I suspected that my friend was stealing money from me, and then I caught her in the act.

caught in the act

Seen, and perhaps apprehended, while doing something (often something nefarious). Our security cameras caught the burglar in the act.

catch someone in the act (of doing something)

to discover someone doing a [bad] deed at the very moment when the deed is being done. I caught her in the act of stealing the coat. He was caught in the act of taking money from the cash box.

caught in the act

and caught red-handed

Fig. seen doing something illegal or private. (See also catch someone in the act (of doing something) and catch someone red-handed.) Tom was caught in the act and cannot deny what he did. Many car thieves are caught red-handed.

catch in the act

see under catch red-handed.

catch somebody in the ˈact (of doing something)

find somebody while they are doing something they should not be doing: She turned round to catch him in the act of trying to run upstairs.

This expression is often used in the passive: He was caught in the act of stealing a car.