Involving secret work within a community or organization, especially for the purposes of police investigation or espionage: an undercover police operation [as adverb]: he worked undercover in Northern Ireland
More example sentences
- In March 1999, police began an undercover surveillance operation on the prison officer.
- Two cases emphasise the need for the use of cautions in connection with police undercover operations.
- The charges arise out of a police undercover operation in the latter part of 1998.
covert, secret, clandestine, private, confidential, conspiratorial, underground, surreptitious, furtive, cloak-and-dagger, hole-and-corner, hugger-mugger, back-alley, backstair, stealthy, closet;
informal hush-hush, sneaky
Words that rhyme with undercovercover, Glover, hardcover, lover, plover
What do you find interesting about this word or phrase?
Comments that don't adhere to our Community Guidelines may be moderated or removed.