spy

²spy

noun

plural spies

Definition of SPY

1

: one that spies: a : one who keeps secret watch on a person or thing to obtain information b : a person employed by one nation to secretly convey classified information of strategic importance to another nation; also : a person who conveys the trade secrets of one company to another

2

: an act of spying

Examples of SPY

1. He was a spy for the CIA.
2. My coworker is a spy for the boss.

First Known Use of SPY

13th century

Related to SPY

Synonyms: agent, asset, emissary, intelligencer, mole, operative, spook, undercover, secret agent, undercover agent

Related Words: courier; counterspy, double agent, sleeper; infiltrator, informer, stool pigeon; spymaster, superspy

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