We found 26 dictionaries that define the word grumpy:

General (23 matching dictionaries)

1. grumpy: Merriam-Webster.com
2. grumpy: Oxford Learner's Dictionaries
3. grumpy: American Heritage Dictionary of the English Language
4. grumpy: Collins English Dictionary
5. grumpy: Vocabulary.com
6. Grumpy, grumpy: Wordnik
7. grumpy: Cambridge Advanced Learner's Dictionary
8. grumpy: Wiktionary
9. grumpy: Webster's New World College Dictionary, 4th Ed.
10. grumpy: The Wordsmyth English Dictionary-Thesaurus
11. grumpy: Infoplease Dictionary
12. Grumpy, grumpy: Dictionary.com
13. grumpy: Cambridge Essential American English Dictionary
14. Grumpy: Wikipedia, the Free Encyclopedia
15. Grumpy: Online Plain Text English Dictionary
16. grumpy: Webster's Revised Unabridged, 1913 Edition
17. grumpy: Rhymezone
18. grumpy: AllWords.com Multi-Lingual Dictionary
19. grumpy: Free Dictionary
20. grumpy: Mnemonic Dictionary
21. grumpy: Dictionary/thesaurus

Business (1 matching dictionary)

22. grumpy: Legal dictionary

Computing (1 matching dictionary)

23. grumpy: Encyclopedia

Slang (1 matching dictionary)

24. grumpy: Urban Dictionary

(Note: See grumpier as well.)

Definitions from Wiktionary ( ) ▸ adjective:  Dissatisfied and irritable. ▸ noun:  (informal) A dissatisfied and irritable person. Similar: crabby, grouchy, bad-tempered, crabbed, ill-natured, ill-tempered, fussy, cross, cranky, fretful, more... Opposite: chipper, cheerful, sunny, bright, happy, content Types: grouchy, crabby, crank, grump, grumpier, grumpiest, more... Phrases: Grumpy Cat, Grumpy Cat's Worst Christmas Ever, grumpy old man, one with a grumpy scowl, grumpy coworker, more... Colors:     dark gray,     charcoal,     stormy blue,     deep brown,     maroon, more... ▸ Words similar to grumpy ▸ Usage examples for grumpy ▸ Idioms related to grumpy ▸ Wikipedia articles (New!) ▸ Popular adjectives describing grumpy ▸ Popular nouns described by grumpy ▸ Words that often appear near grumpy ▸ Rhymes of grumpy ▸ Invented words related to grumpy