Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun mumble

1 sense of mumble

Sense 1
mumble -- (a soft indistinct utterance)
       => utterance, vocalization -- (the use of uttered sounds for auditory communication)

Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb mumble

2 senses of mumble

Sense 1
mumble, mutter, maunder, mussitate -- (talk indistinctly; usually in a low voice)
       => talk, speak, utter, mouth, verbalize, verbalise -- (express in speech; "She talks a lot of nonsense"; "This depressed patient does not verbalize")

Sense 2
mumble, gum -- (grind with the gums; chew without teeth and with great difficulty; "the old man had no teeth left and mumbled his food")
       => chew, masticate, manducate, jaw -- (chew (food); to bite and grind with the teeth; "He jawed his bubble gum"; "Chew your food and don't swallow it!"; "The cows were masticating the grass")