spying Meaning, Definition & Usage

1. noun keeping a secret or furtive watch
   
2. noun the act of keeping a secret watch for intelligence purposes
   undercover work.
   
3. noun the act of detecting something; catching sight of something
   detection; espial; catching; spotting.
   
4. verb catch sight of
   espy; spot; descry; spy.
   
5. verb watch, observe, or inquire secretly
   sleuth; spy; snoop; stag.
   
6. verb catch sight of; to perceive with the eyes
   spy; sight.
   
   • he caught sight of the king's men coming over the ridge
7. verb secretly collect sensitive or classified information; engage in espionage
   spy.
   
   • spy for the Russians

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