mumbles; mumbled; mumbling
: to say (something) quietly in an unclear way that makes it difficult for people to know what you said
He mumbled something and then left.
He mumbled "Goodbye" and then left.
I can't understand you when you mumble.
a mumbling response
: a way of speaking that is not clear enough to be understood
He answered in his usual mumble.
She spoke in a mumble.
Cite this Entry
“Mumble.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/mumble. Accessed 15 Apr. 2026.
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