undercover
//ˌʌndərˈkʌvər//
Adjective
undercoverCanonical form
1
Working or done in secret, especially by disguising one's true identity or purpose, typically in relation to police or espionage activities.
The undercover detective spent months infiltrating the criminal organization.
2
Hidden or concealed from view or knowledge.
The documents were kept in an undercover location.
Synonym
Adverb
undercoverCanonical form
1
In a secret or disguised manner.
The detective worked undercover to gather evidence.