Synonym: detect, discern, observe, see, sight, spot, view. Similar words: say, sec., any, bay, boy, buy, by, day. Meaning: [spaɪ] 
n. 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 2. a secret watcher; someone who secretly watches other people. v. 1. catch sight of 2. watch, observe, or inquire secretly 3. secretly collect sensitive or classified information; engage in espionage.
n. 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 2. a secret watcher; someone who secretly watches other people. v. 1. catch sight of 2. watch, observe, or inquire secretly 3. secretly collect sensitive or classified information; engage in espionage. 
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61) He was the first to spy the horseman in the distance.
62) His work as a civil servant was a cover for his activities as a spy.
63) The inspector insisted the meeting be held, in true spy novel fashion, in the open air.
64) The FBI were called in to hunt for the spy.
65) By their cutbacks you shall spy them out.
66) He saw a college spy, madly in love.
67) Hollis was almost certainly a Soviet spy.
67) Sentencedict.com try its best to gather and build good sentences.
68) They thought he was a Soviet spy.
69) There must be a spy story in here somewhere.
70) A sort of known and often welcome spy.
71) Oh, what a little clairvoyant spy I was!
72) "Shepherd" was a slang term for a spy.
73) Nurse Edith Cavell was shot as a spy.
74) He went there as a spy.
75) Minox is the world-famous spy camera.
76) Mike Myers heads the cast of this spy spoof.
77) So did our successful interception of your spy plane.
78) Any takers for a satellite to spy for peace?
79) And for hints about the way you spy.
80) Guillaume was exposed as an East German spy.
81) He's asking awkward questions, he's probably a spy.
82) It is not uncommon for one licensed dealer to send a spy to work in another.
83) During the Cold War, U-2 spy plane pilots installed rear-view mirrors on the aircraft to monitor their exhaust.
84) He was wrong. Newly discovered papers reveal that behind his bumbling front Betjeman was an exceedingly good spy.
85) As spy chief, Mr Montesinos visited Guzman at the naval base on several occasions to question him.
86) Tolstoy, Hemingway and Hardy, thrillers and spy stories, historical novels, light romances.
87) Even small children were used as instruments in the regime, encouraged to spy on and report their parents.
88) Yeltsin picked Yevgeny Primakov, a spy chief, for foreign minister.
89) She enticed into her house the party Odysseus dispatched to spy out the land, and there she changed them into swine.
90) In any case, I don't think I'd make a very good spy.