undercover
/ˌʌndərˈkʌvər/
adjective
- Working or done secretly, especially to investigate or catch criminals.
- She worked as an undercover journalist to expose the corruption.
- The police used an undercover officer to buy illegal weapons.
- The detective went undercover to infiltrate the drug ring.
Synonyms
Antonyms
adverb
- In a secret way, especially as part of an investigation.
- They operated undercover for months before making any arrests.
- He went undercover to gather evidence against the gang.
- The agent was living undercover in the neighborhood.