definition of
mumble

[1] #1 mumble v. [mutter, maunder, mussitate] talk indistinctly; usually in a low voice. wn

[2] #2 mumble n. a soft indistinct utterance. wn

[3] #3 mumble v. [gum] grind with the gums; chew without teeth and with great difficulty; "the old man had no teeth left and mumbled his food". wn