Expert as in decoy Someone who informs authorities about illegal or unacceptable activities; a tattletale. Clear All
3 Example Sentences Showcasing the Meaning of 'Nark'
In the world of espionage, a nark is an essential tool for extracting confidential information.
The intelligence agency recruited a skilled operative to work as a nark in the criminal underworld.
The nark received threats from the criminal gang after providing information to the police.
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