Definition of mumped:
(v) :
(ambitransitive) To mumble, speak unclearly.
(v) :
To move the lips with the mouth closed; to mumble, as in sulkiness.
(v) :
(intransitive) To beg, especially if using a repeated phrase.
(v) :
To be sullen or sulky.
(v) :
To cheat; to deceive; to play the beggar.
(v) :
To deprive of (something) by cheating; to impose upon.