undercover
adjective
1. conducted with or marked by hidden aims or methods
- an undercover investigation
Similar word(s): covert, clandestine, secret, surreptitious, underground
noun
1. A person who works undercover.
1. conducted with or marked by hidden aims or methods
- an undercover investigation
Similar word(s): covert, clandestine, secret, surreptitious, underground
1. A person who works undercover.