undercover operation

Thesaurus

Noun

1.

undercover operation - an operation involving secret work within a community or institutionoperation - a planned activity involving many people performing various actions; "they organized a rescue operation"; "the biggest police operation in French history"; "running a restaurant is quite an operation"; "consolidate the companies various operations"buy-and-bust operation - an undercover operation by narcotics detectives to catch unsuspecting drug dealers