mump1

[muhmp, moo mp] /mʌmp, mʊmp/
verb (used with object)
1.
to mumble; mutter.
verb (used without object)
2.
to sulk; mope.
3.
to grimace.
Origin
1580-90; imitative, apparently akin to mum1; compare Dutch mompen to mumble, German mimpfeln to mumble while eating, Icelandic mumpa to take into the mouth, eat greedily

mump2

[muhmp, moo mp] /mʌmp, mʊmp/
verb (used with object)
1.
to cheat.
verb (used without object)
2.
to beg.
Origin
1645-55; < Dutch mompen (obsolete)
British Dictionary definitions for mump

mump1

/mʌmp/
verb
1.
(intransitive) (archaic) to be silent
Word Origin
C16 (to grimace, sulk, be silent): of imitative origin, alluding to the shape of the mouth when mumbling or chewing

mump2

/mʌmp/
verb
1.
(intransitive) (archaic) to beg
Word Origin
C17: perhaps from Dutch mompen to cheat