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We found 36 dictionaries with English definitions that include the word keen:
Click on the first link on a line below to go directly to a page where "keen" is defined.

General (31 matching dictionaries)

1. keen: Merriam-Webster.com [home, info]
2. keen, keen: Oxford Learner's Dictionaries [home, info]
3. keen, keen: American Heritage Dictionary of the English Language [home, info]
4. keen: Collins English Dictionary [home, info]
5. keen: Vocabulary.com [home, info]
6. keen, keen: Macmillan Dictionary [home, info]
7. Keen, keen: Wordnik [home, info]
8. keen: Cambridge Advanced Learner's Dictionary [home, info]
9. Keen, keen: Wiktionary [home, info]
10. keen: Webster's New World College Dictionary, 4th Ed. [home, info]
11. keen: The Wordsmyth English Dictionary-Thesaurus [home, info]
12. keen: Infoplease Dictionary [home, info]
13. Keen, keen: Dictionary.com [home, info]
14. keen (adj.), keen (v.): Online Etymology Dictionary [home, info]
15. keen: UltraLingua English Dictionary [home, info]
16. keen: Cambridge Dictionary of American English [home, info]
17. keen: Cambridge International Dictionary of Idioms [home, info]
18. KEEN, KeeN, Keen (band), Keen (shoe company), Keen (surname), Keen: Wikipedia, the Free Encyclopedia [home, info]
19. Keen: Online Plain Text English Dictionary [home, info]
20. keen: Webster's Revised Unabridged, 1913 Edition [home, info]
21. keen: Rhymezone [home, info]
22. keen: AllWords.com Multi-Lingual Dictionary [home, info]
23. keen: Webster's 1828 Dictionary [home, info]
24. keen: Free Dictionary [home, info]
25. keen: Mnemonic Dictionary [home, info]
26. keen: WordNet 1.7 Vocabulary Helper [home, info]
27. Keen, keen: LookWAYup Translating Dictionary/Thesaurus [home, info]
28. keen: Dictionary/thesaurus [home, info]
29. keen: Wikimedia Commons US English Pronunciations [home, info]

Business (1 matching dictionary)

30. keen: Legal dictionary [home, info]

Computing (1 matching dictionary)

31. keen: Encyclopedia [home, info]

Miscellaneous (3 matching dictionaries)

32. KEEN: Acronym Finder [home, info]
33. KEEN: AbbreviationZ [home, info]
34. keen: Idioms [home, info]

(Note: See keens for more definitions.)

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (keen) ▸ noun:  a funeral lament sung with loud wailing ▸ verb:  express grief verbally ▸ adjective:  having a sharp cutting edge or point ("A keen blade") ▸ adjective:  very penetrating and clear and sharp in operation ("A keen intelligence") ▸ adjective:  intense or sharp ▸ adjective:  as physically painful as if caused by a sharp instrument ("Keen winds") ▸ adjective:  having or demonstrating ability to recognize or draw fine distinctions ▸ adjective:  very good ▸ name:  A surname (common: 1 in 12500 families; popularity rank in the U.S.: #1624) ▸ Also see keens ▸ Word origin ▸ Words similar to keen ▸ Usage examples for keen ▸ Idioms related to keen (New!) ▸ Popular adjectives describing keen ▸ Popular nouns described by keen ▸ Words that often appear near keen ▸ Rhymes of keen ▸ Invented words related to keen