v. grum·bled, grum·bling, grum·bles
1. To complain in a surly manner; mutter discontentedly: "The governed will always find something to grumble about" (Crane Brinton).
2. To rumble or growl.
To express in a grumbling discontented manner: grumbled a rude response.
1. A muttered complaint.
2. A rumble; a growl.
[Probably Dutch grommelen, to mutter, from Middle Dutch, frequentative of grommen.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.