Definition of espionage noun from the Oxford Advanced Learner's Dictionary

 

espionage

 noun
noun
BrE BrE//ˈespiənɑːʒ//
 
; NAmE NAmE//ˈespiənɑːʒ//
 
[uncountable]
 
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the activity of secretly getting important political or military information about another country or of finding out another company’s secrets by using spies synonym spying Some of the commercial activities were a cover for espionage. She may call it research; I call it industrial espionage. see also counter-espionage Word Origin late 18th cent.: from French espionnage, from espionner ‘to spy’, from espion ‘a spy’.Extra examples She was found guilty of espionage against the United States. The big computer companies are very worried about industrial espionage. Two members of the embassy staff had been expelled for espionage. espionage on behalf of foreign states evidence of espionage activities in Australia one of the most important espionage cases of the 20th century the shadowy world of espionage
See the Oxford Advanced American Dictionary entry: espionage

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