To speak with the lips partly closed, so as to render the sounds inarticulate and imperfect; to utter words in a grumbling indistinct manner, indicating discontent or displeasure; to mutter. Peace, you mumbling fool. Shak. A wrinkled hag, with age grown double, Picking dry sticks, and mumbling to herself. Otway.
To chew something gently with closed lips.
To utter with a low, inarticulate voice. Bp. Hall.
To chew or bite gently, as one without teeth. Gums unarmed, to mumble meat in vain. Dryden.
To suppress, or utter imperfectly.
98,828 entries. Headwords are matched first, then definition text.