Definition of Spy

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

2. Verb. Catch sight of.
Exact synonyms: Descry, Espy, Spot
Generic synonyms: Sight
Derivative terms: Espial, Spotter, Spotter, Spotting, Spying

3. Noun. A secret watcher; someone who secretly watches other people. "My spies tell me that you had a good time last night"
Specialized synonyms: Snoop, Snooper, Shadow, Shadower, Tail
Generic synonyms: Looker, Spectator, Viewer, Watcher, Witness

4. Verb. Watch, observe, or inquire secretly.
Exact synonyms: Sleuth, Snoop, Stag
Entails: Enquire, Inquire, Investigate
Generic synonyms: Monitor, Supervise
Derivative terms: Sleuth, Sleuthing, Snoop, Snooper, Spying

5. Verb. Catch sight of; to perceive with the eyes. "He caught sight of the king's men coming over the ridge"
Exact synonyms: Sight
Generic synonyms: Comprehend, Perceive
Specialized synonyms: Descry, Espy, Spot, Detect, Discover, Find, Notice, Observe
Derivative terms: Sight, Sight, Sight, Sight, Sight, Sighting

6. Verb. Secretly collect sensitive or classified information; engage in espionage. "Spy for the Russians"
Generic synonyms: Enquire, Inquire, Investigate
Derivative terms: Spying

Definition of Spy

1. v. t. To gain sight of; to discover at a distance, or in a state of concealment; to espy; to see.

2. v. i. To search narrowly; to scrutinize.

3. n. One who keeps a constant watch of the conduct of others.

Definition of Spy

1. Noun. A person who secretly watches and examines the actions of other individuals or organizations and gathers information on them (usually to gain an advantage) ¹

2. Verb. (intransitive) To act as a spy. ¹

3. Verb. (transitive) To spot at a distance. ¹

¹ Source:

Definition of Spy

1. to watch secretly [v SPIED, SPYING, SPIES]

Medical Definition of Spy

1. Origin: See Spy, and cf. Espy. 1. One who keeps a constant watch of the conduct of others. "These wretched spies of wit." 2. A person sent secretly into an enemy's camp, territory, or fortifications, to inspect his works, ascertain his strength, movements, or designs, and to communicate such intelligence to the proper officer. Spy money, money paid to a spy; the reward for private or secret intelligence regarding the enemy. Spy Wednesday, the Wednesday immediately preceding the festival of Easter; so called in allusion to the betrayal of Christ by Judas Iscariot. Synonym: See Emissary, and Scout. Source: Websters Dictionary (01 Mar 1998)

Lexicographical Neighbors of Spy

sputtering yield
sputum aerogenosum
sputum analysis
sputum culture
sputum for acid-fast organisms
sputum smear
spy (current term)
spy on
spy ring
spy rings
spy satellite
spy satellites

Other Resources:

Search for Spy on!Search for Spy on!Search for Spy on Google!Search for Spy on Wikipedia!