We found 32 dictionaries that define the word nincompoop:

General (29 matching dictionaries)

1. nincompoop: Longman Dictionary of Contemporary English
2. nincompoop: Merriam-Webster
3. nincompoop: Oxford Learner's Dictionaries
4. nincompoop: American Heritage Dictionary of the English Language
5. nincompoop: Collins English Dictionary
6. nincompoop: Vocabulary.com
7. nincompoop: Wordnik
8. nincompoop: Cambridge Advanced Learner's Dictionary
9. nincompoop: Wiktionary
10. nincompoop: Webster's New World College Dictionary, 4th Ed.
11. nincompoop: The Wordsmyth English Dictionary-Thesaurus
12. nincompoop: Infoplease Dictionary
13. Nincompoop, nincompoop: Dictionary.com
14. nincompoop: Online Etymology Dictionary
15. nincompoop: Cambridge Essential American English Dictionary
16. Nincompoop: Wikipedia, the Free Encyclopedia
17. Nincompoop: Online Plain Text English Dictionary
18. nincompoop: Webster's Revised Unabridged, 1913 Edition
19. nincompoop: Rhymezone
20. Nincompoop: AllWords.com Multi-Lingual Dictionary
21. nincompoop: Webster's 1828 Dictionary
22. Nincompoop: Dictionary of Phrase and Fable (1898)
23. nincompoop: FreeDictionary.org
24. nincompoop: Mnemonic Dictionary
25. Nincompoop: The Word Detective
26. nincompoop: TheFreeDictionary.com
27. Nincompoop: World Wide Words
28. nincompoop: Wikimedia Commons US English Pronunciations

Computing (1 matching dictionary)

29. nincompoop: Encyclopedia

Miscellaneous (1 matching dictionary)

30. nincompoop: A Word A Day

Slang (1 matching dictionary)

31. nincompoop: Green’s Dictionary of Slang

(Note: See nincompoopery as well.)

Definitions from Wiktionary ( ) ▸ noun:  (derogatory) A foolish or silly person. Similar: ninny, poop, nincom, nicompoop, nincumpoop, nincum, nickumpoop, damnfool, liripoop, poophead, more... Opposite: smart, intelligent, brilliant, genius Types: idiot, moron, imbecile, dolt, cretin, simpleton, fool, buffoon, more... Adjectives: such, little, old, complete, crafty, absolute, young, great, incompetent, total, brainless Colors:     chartreuse,     mauve,     puce,     periwinkle,     fuchsia, more... ▸ Word origin ▸ Words similar to nincompoop ▸ Usage examples for nincompoop ▸ Idioms related to nincompoop ▸ Wikipedia articles (New!) ▸ Popular adjectives describing nincompoop ▸ Words that often appear near nincompoop ▸ Rhymes of nincompoop ▸ Invented words related to nincompoop