
Undercover
Secret Missions
Used to describe activities that require complete secrecy, often for security or legal reasons.

She was on an undercover mission to gather intelligence.
Crime Investigation
Commonly used in the context of police or detectives secretly gathering evidence.

The officer went undercover to catch the thief.
Hidden Identity
Implies someone is hiding their true identity to avoid detection, usually by blending in.

He wore a disguise to stay undercover at the party.
Compare with
ConfidentialCovertHideIncognitoSecretStealthySurreptitious
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