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Definitions of spy
  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

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  2. verb
    catch sight of

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  3. verb
    watch, observe, or inquire secretly

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  4. verb
    catch sight of; to perceive with the eyes

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  5. noun
    a secret watcher; someone who secretly watches other people
  6. verb
    secretly collect sensitive or classified information; engage in espionage
    "spy for the Russians"
Examples of spy
  • "spy for the Russians"
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