Mump /(?)/

1. To move the lips with the mouth closed; to mumble, as in sulkiness.

   He mumps, and lovers, and hangs the lip.

2. To talk imperfectly, brokenly, or feebly; to chatter unintelligibly.
3. To cheat; to deceive; to play the beggar.

   And then when mumping with a sore leg, . . . canting and whining.

4. To be sullen or sulky. [Prov. Eng.]

imp. & p. p. Mumped; p. pr. & vb. n. Mumping

1. To utter imperfectly, brokenly, or feebly.

   Old men who mump their passion.

2. To work over with the mouth; to mumble; as, to mump food.
3. To deprive of (something) by cheating; to impose upon.