DICT.TW Dictionary Taiwan

 Mum·ble v. t. [imp. & p. p. Mumbled p. pr. & vb. n. Mumbling ]
 1. 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.
 2. To chew something gently with closed lips.