The practice of spying or of using spies, typically by governments to obtain political and military information.
- Balzac pumped him for information on organised crime and political espionage.
- He denied his detention had anything to do with politics or espionage.
- The run for the presidency is no joke, rife with political chicanery, espionage and blackmail.
eavesdropping, surveillance, reconnaissance, intelligence, undercover work;
informal black ops
Late 18th century: from French espionnage, from espionner 'to spy', from espion 'a spy'.
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