v. t. To utter with imperfect articulations, or with a low voice;
v. i.
Wizards that peep, and that mutter. Is. viii. 19. [ 1913 Webster ]
Meantime your filthy foreigner will stare,
And mutter to himself. Dryden. [ 1913 Webster ]
Thick lightnings flash, the muttering thunder rolls. Pope. [ 1913 Webster ]
n. Repressed or obscure utterance. [ 1913 Webster ]
n. One who mutters. [ 1913 Webster ]
adv. With a low voice and indistinct articulation; in a muttering manner. [ 1913 Webster ]