Mump

Mump (?), v. i. [Akin to mumble; cf. D. mompen to cheat; perh. orig., to whine like a beggar, D. mompelen to mumble. See Mumble, Mum, and cf. Mumps.] 1. To move the lips with the mouth closed; to mumble, as in sulkiness.

He mumps, and lovers, and hangs the lip.
Taylor, 1630.

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.
Burke.

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

Mump, v. t. [imp. & p. p. Mumped (?); p. pr. & vb. n. Mumping.] 1. To utter imperfectly, brokenly, or feebly.

Old men who mump their passion.
Goldsmith.

2. To work over with the mouth; to mumble; as, to mump food.

3. To deprive of (something) by cheating; to impose upon.