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spy

spy [ spī ]


noun  (plural spies)
Definition:
 
1. somebody employed to obtain secret information: an employee of a government who seeks secret information in or from another country, especially about military matters
a spy ring

2. employee who obtains information about rivals: an employee of a company who seeks secret information about rival organizations

3. secret observer of others: a watcher of other people in secret

4. act of spy: an instance of acting as a spy



verb  (past and past participle spied, present participle spy·ing, 3rd person present singular spies)
Definition:
 
1. intransitive verb act as spy: to work, operate, or function as a spy

2. intransitive verb engage in espionage: to maintain a network of spies and gather intelligence in other clandestine ways

3. intransitive verb observe in secret: to keep watch secretly or furtively on somebody or something in order to gain information
Have you been spying on us again?

4. intransitive verb investigate: to try to discover information about something or somebody by means of intensive covert investigations
trying to spy into their customers' purchasing habits

5. transitive verb see somebody or something suddenly: to catch sight of somebody or something, often by chance
I happened to look out of the window and spied him scuttling across the yard.

6. transitive verb discover something by observation: to discover something by close observation

[13th century. < Old French espie< espier "to spy" < Germanic]
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