We found 19 dictionaries that define the word grumbling:

General (16 matching dictionaries)

1. grumbling: Merriam-Webster
2. grumbling: Collins English Dictionary
3. grumbling: Vocabulary.com
4. Grumbling, grumbling: Wordnik
5. grumbling: Cambridge Advanced Learner's Dictionary
6. grumbling: Wiktionary
7. Grumbling, grumbling: Dictionary.com
8. grumbling: Cambridge Essential American English Dictionary
9. Grumbling: Online Plain Text English Dictionary
10. grumbling: Rhymezone
11. Grumbling: AllWords.com Multi-Lingual Dictionary
12. grumbling: Webster's 1828 Dictionary
13. grumbling: FreeDictionary.org
14. grumbling: Mnemonic Dictionary
15. grumbling: TheFreeDictionary.com
16. grumbling: Longman Dictionary of Contemporary English

Business (1 matching dictionary)

17. grumbling: Legal dictionary

Computing (1 matching dictionary)

18. grumbling: Encyclopedia

Miscellaneous (1 matching dictionary)

19. grumbling: Idioms

(Note: See grumble as well.)

Definitions from Wiktionary (grumbling) ▸ noun:  complaining ▸ noun:  rumbling Similar: complaining, complaintive, mutter, murmuring, rumbling, full, chuntering, grousing, kvetching, grouch, more... Opposite: content, pleased, satisfied Types: muttering, mumbling, whimpering, grousing, griping, complaining, more... Phrases: grumbling appendix, grumbling online, more... Adjectives: much, little, considerable, constant, low, usual, mere, loud, private, general, occasional Colors:     gray,     charcoal,     stormy blue,     deep green,     midnight blue, more... ▸ Words similar to grumbling ▸ Usage examples for grumbling ▸ Idioms related to grumbling ▸ Wikipedia articles (New!) ▸ Popular adjectives describing grumbling ▸ Words that often appear near grumbling ▸ Rhymes of grumbling ▸ Invented words related to grumbling