Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “mumble”


verb [I or T]     /ˈmʌ̩/
B2 to speak quietly and in a way that is not clear so that the words are difficult to understand: She mumbled something about being too busy. [+ speech] "I'm sorry," he mumbled.Ways of talking
(Definition of mumble verb from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of mumble

Definitions of “mumble” in other dictionaries

Word of the Day


showing a wish to help or bring advantages to others, even if it results in disadvantage for yourself

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More