Definition of Mumbling

speaking in a quiet, indiscernible way

Examples of Mumbling in a sentence

I was interested in the Micaiah’s research topic, but she was mumbling so much the class couldn’t tell what she was saying.  

Henrietta has a bad tendency to revert to mumbling whenever she gets embarrassed, making it difficult to understand her words.  

Intimidated by the much larger security officer, Kristen couldn’t help mumbling her response to his pointed questions.  

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