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We found 45 dictionaries with English definitions that include the word spy:
Click on the first link on a line below to go directly to a page where "spy" is defined.

General (33 matching dictionaries)

1. spy: Merriam-Webster.com [home, info]
2. spy: Oxford Learner's Dictionaries [home, info]
3. spy: American Heritage Dictionary of the English Language [home, info]
4. spy: Collins English Dictionary [home, info]
5. spy: Vocabulary.com [home, info]
6. spy, spy: Macmillan Dictionary [home, info]
7. Spy, spy: Wordnik [home, info]
8. spy: Cambridge Advanced Learner's Dictionary [home, info]
9. spy: Wiktionary [home, info]
10. spy: Webster's New World College Dictionary, 4th Ed. [home, info]
11. spy: The Wordsmyth English Dictionary-Thesaurus [home, info]
12. spy: Infoplease Dictionary [home, info]
13. spy: Dictionary.com [home, info]
14. spy: Online Etymology Dictionary [home, info]
15. Spy, spy: UltraLingua English Dictionary [home, info]
16. spy: Cambridge Dictionary of American English [home, info]
17. S.P.Y, SPY (disambiguation), SPY, Spy (Carly Simon album), Spy (Super Junior song), Spy (TV series), Spy (band), Spy (disambiguation), Spy (film), Spy (gridiron football), Spy (magazine), Spy, The Spy (Cooper), The Spy (Cooper novel), The Spy (Cussler novel), The Spy (TV series), The Spy: Wikipedia, the Free Encyclopedia [home, info]
18. spy: Cambridge International Dictionary of Phrasal Verbs [home, info]
19. Spy: Online Plain Text English Dictionary [home, info]
20. spy: Webster's Revised Unabridged, 1913 Edition [home, info]
21. spy: Rhymezone [home, info]
22. spy: AllWords.com Multi-Lingual Dictionary [home, info]
23. spy: Webster's 1828 Dictionary [home, info]
24. Spy, Spy: Dictionary of Phrase and Fable (1898) [home, info]
25. Spy: 1911 edition of the Encyclopedia Britannica [home, info]
26. spy: Free Dictionary [home, info]
27. spy: Mnemonic Dictionary [home, info]
28. spy: WordNet 1.7 Vocabulary Helper [home, info]
29. spy: LookWAYup Translating Dictionary/Thesaurus [home, info]
30. spy: Dictionary/thesaurus [home, info]
31. spy: Wikimedia Commons US English Pronunciations [home, info]

Business (2 matching dictionaries)

32. SPY: Bouvier's Law Dictionary 1856 Edition [home, info]
33. spy: Legal dictionary [home, info]

Computing (1 matching dictionary)

34. spy: Encyclopedia [home, info]

Medicine (1 matching dictionary)

35. spy: online medical dictionary [home, info]

Miscellaneous (5 matching dictionaries)

36. Spy: Brilliant Dream Dictionary [home, info]
37. SPY: Acronym Finder [home, info]
38. SPY: Three Letter Words with definitions [home, info]
39. SPY: AbbreviationZ [home, info]
40. spy: Idioms [home, info]

Science (1 matching dictionary)

41. Spy: Archaeology Wordsmith [home, info]

Slang (1 matching dictionary)

42. The Spy: Urban Dictionary [home, info]

Tech (1 matching dictionary)

43. SPY: SOLAR-TERRESTRIAL TERMS [home, info]

(Note: See spys for more definitions.)

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (spy) ▸ 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 ▸ noun:  a secret watcher; someone who secretly watches other people ▸ verb:  secretly collect sensitive or classified information; engage in espionage ("Spy for the Russians") ▸ verb:  watch, observe, or inquire secretly ▸ verb:  catch sight of ▸ Also see spys ▸ Word origin ▸ Words similar to spy ▸ Usage examples for spy ▸ Idioms related to spy (New!) ▸ Popular adjectives describing spy ▸ Words that often appear near spy ▸ Rhymes of spy ▸ Invented words related to spy