undercover
adjective/ˌʌndəˈkʌvə(r)/
/ˌʌndərˈkʌvər/
[usually before noun]- working or done secretly in order to find out information for the police, a government, etc.
- an undercover agent
- an undercover operation/investigation
- The scandal was revealed after months of undercover work by journalists.
Oxford Collocations DictionaryUndercover is used with these nouns:- agent
- detective
- mission
- …
Check pronunciation:
undercover