Also found in: Thesaurus, Idioms.
Related to grumblingly: grumbling appendix
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.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.