(noun, verb)


1. (military) a secret agent hired by a state to obtain information about its enemies or by a business to obtain industrial secrets from competitors

Definition categories: person, operative

2. a secret watcher; someone who secretly watches other people

Definition categories: person, looker, spectator, viewer, watcher, witness


1. catch sight of

Similar word(s): descry, espy, spot

Definition categories: perception, sight, spy

2. watch, observe, or inquire secretly

Similar word(s): sleuth, snoop, stag

Definition categories: communication, monitor, supervise

3. catch sight of; to perceive with the eyes

Similar word(s): sight

Definition categories: perception, comprehend, perceive

4. secretly collect sensitive or classified information; engage in espionage

- spy for the Russians

Definition categories: communication, enquire, inquire, investigate

Sentences with spy as a verb:

- During the Cold War, Russia and America would each spy on each other for recon.

- I think I can spy that hot guy coming over here.