undercover agent

Definitions of undercover agent
  1. noun
    (military) a secret agent hired by a state to obtain information about its enemies or by a business to obtain industrial secrets from competitors
    synonyms: spy
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    examples:
    Margarete Gertrud Zelle
    Dutch dancer who was executed by the French as a German spy in World War I (1876-1917)
    types:
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    counterspy, mole
    a spy who works against enemy espionage
    double agent
    a spy who works for two mutually antagonistic countries
    espionage agent
    someone employed to spy on another country or business competitor
    foreign agent
    a spy for a foreign country
    infiltrator
    someone who takes up a position surreptitiously for the purpose of espionage
    sleeper
    a spy or saboteur or terrorist planted in an enemy country who lives there as a law-abiding citizen until activated by a prearranged signal
    type of:
    intelligence agent, intelligence officer, operative, secret agent
    a person secretly employed in espionage for a government
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