(1):
(v. t.) To work over with the mouth; to mumble; as, to mump food.
(2):
(v. i.) To talk imperfectly, brokenly, or feebly; to chatter unintelligibly.
(3):
(v. t.) To deprive of (something) by cheating; to impose upon.
(4):
(v. t.) To utter imperfectly, brokenly, or feebly.
(5):
(v. i.) To cheat; to deceive; to play the beggar.
(6):
(v. i.) To be sullen or sulky.
(7):
(v. i.) To move the lips with the mouth closed; to mumble, as in sulkiness.