mumble >> ˈmʌmb(ə)l
Definition: [verb] say something indistinctly and quietly, making it difficult for others to hear.
Example: he mumbled something she didn't catch
Definition: [verb] bite or chew (something) with toothless gums or without making much use of the teeth.
Example: she mumbled a piece of black bread
Definition: [noun] a quiet and indistinct utterance.
Example: Rosie had replied in a mumble