undercover
US /ˌʌn.dɚˈkʌv.ɚ/
UK /ˌʌn.dɚˈkʌv.ɚ/
1.
involved in a secret investigation, typically for legal or intelligence purposes
:
•
The police officer went undercover to infiltrate the criminal organization.
•
She wrote an undercover report on the working conditions in the factory.
1.
in a secret way, especially for an investigation
:
•
The detective worked undercover for months to gather evidence.
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They operated undercover to expose the corruption.