spy

spy

noun

Definition of SPY

a person who tries secretly to obtain information for one country in the territory of another usually unfriendly country <the government spy risked his life every day in the fight against global terrorism>

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

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

Phrases secret agent, undercover agent