SPY

Definition:

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: undercover agent
   
   
2. [noun] a secret watcher; someone who secretly watches other people; "my spies tell me that you had a good time last night"
   
   
3. [verb] catch sight of
   Synonyms: descry, spot
   
   
4. [verb] watch, observe, or inquire secretly
   Synonyms: stag, snoop, sleuth
   
   
5. [verb] secretly collect sensitive or classified information; engage in espionage; "spy for the Russians"
   
   

Synonyms:

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Related Words:

• counterspy, mole
• double agent
• espionage agent
• foreign agent
• infiltrator
• sleeper
• Mata Hari, Margarete Gertrud Zelle
• snoop, snooper
• tail, shadow, shadower

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