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