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

General (30 matching dictionaries)

1. viper: Merriam-Webster.com [home, info]
2. viper: Oxford Learner's Dictionaries [home, info]
3. viper: American Heritage Dictionary of the English Language [home, info]
4. viper: Collins English Dictionary [home, info]
5. viper: Vocabulary.com [home, info]
6. viper: Macmillan Dictionary [home, info]
7. Viper, viper: Wordnik [home, info]
8. viper: Cambridge Advanced Learner's Dictionary [home, info]
9. viper: Wiktionary [home, info]
10. viper: Webster's New World College Dictionary, 4th Ed. [home, info]
11. viper: The Wordsmyth English Dictionary-Thesaurus [home, info]
12. viper: Infoplease Dictionary [home, info]
13. Viper, viper: Dictionary.com [home, info]
14. viper: Online Etymology Dictionary [home, info]
15. viper: UltraLingua English Dictionary [home, info]
16. viper: Cambridge Dictionary of American English [home, info]
17. The Viper (film), VIPER (rover), VIPeR, Viper (Darien Lake), Viper (G.I. Joe), Viper (Gotham), Viper (Madame Hydra), Viper (Marvel Comics), Viper (Six Flags AstroWorld), Viper (Six Flags Darien Lake), Viper (Six Flags Great Adventure), Viper (Six Flags Great America), Viper (Six Flags Magic Mountain), Viper (TV series), Viper (actress), Viper (animal), Viper (band), Viper (disambiguation), Viper (hieroglyph), Viper (person), Viper (pornographic actress), Viper (rapper), Viper (rebreather), Viper (snake), Viper (wrestler), Viper: Wikipedia, the Free Encyclopedia [home, info]
18. Viper: Online Plain Text English Dictionary [home, info]
19. viper: Webster's Revised Unabridged, 1913 Edition [home, info]
20. viper: Rhymezone [home, info]
21. Viper: AllWords.com Multi-Lingual Dictionary [home, info]
22. viper: Webster's 1828 Dictionary [home, info]
23. Viper: 1911 edition of the Encyclopedia Britannica [home, info]
24. viper: Free Dictionary [home, info]
25. viper: Mnemonic Dictionary [home, info]
26. viper: WordNet 1.7 Vocabulary Helper [home, info]
27. viper: LookWAYup Translating Dictionary/Thesaurus [home, info]
28. viper: Dictionary/thesaurus [home, info]

Art (1 matching dictionary)

29. Viper: Natural Magick [home, info]

Business (2 matching dictionaries)

30. VIPER: INVESTORWORDS [home, info]
31. viper: Legal dictionary [home, info]

Computing (2 matching dictionaries)

32. VIPER: BABEL: Computer Oriented Abbreviations and Acronyms [home, info]
33. VIPER (Hero Universe), VIPER (role-playing game), Viper (disambiguation), Viper (robot), viper: Encyclopedia [home, info]

Medicine (2 matching dictionaries)

34. viper: online medical dictionary [home, info]
35. VIPER (Hero Universe), VIPER (role-playing game), Viper (disambiguation), Viper (robot), viper: Medical dictionary [home, info]

Miscellaneous (4 matching dictionaries)

36. Viper: Brilliant Dream Dictionary [home, info]
37. VIPER: Acronym Finder [home, info]
38. VIPER: AbbreviationZ [home, info]
39. viper: Wordcraft Dictionary [home, info]

Religion (2 matching dictionaries)

40. Viper: Easton Bible [home, info]
41. Viper: Smith's Bible Dictionary [home, info]

Slang (2 matching dictionaries)

42. Viper: Street Terms: Drugs and the Drug Trade [home, info]
43. The Viper: Urban Dictionary [home, info]

(Note: See vipers for more definitions.)

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (viper) ▸ noun:  venomous Old World snakes characterized by hollow venom-conducting fangs in the upper jaw ▸ Also see vipers ▸ Word origin ▸ Words similar to viper ▸ Usage examples for viper ▸ Idioms related to viper (New!) ▸ Popular adjectives describing viper ▸ Words that often appear near viper ▸ Rhymes of viper ▸ Invented words related to viper