spy

/spˈa‍ɪ/

/ˈspaɪ/

to spy

MAIN VERB

to secretly observe someone

synonyms : sleuth

catch sight of

synonyms : descry

secretly collect sensitive or classified information; engage in espionage

catch sight of; to perceive with the eyes

synonyms : sight

Spy

someone who is employed by a government to obtain secret information on another person, country, company, etc.

a secret watcher; someone who secretly watches other people

Examples

1. The spy stole across the border under the cover of darkness.

2. A spy novel set in Berlin.

3. The spy fled when he realized that someone had blown his cover.

4. The spy knew that they couldn't trust anyone, since three may keep a secret if two are dead.