Definition of mitched:
(v) :
(Ireland, Wales, ambitransitive) To be absent from (school) without a valid excuse; to play truant, to skive off.
(v) :
(transitive, dialectal) To pilfer; filch; steal.
(v) :
(intransitive, dialectal) To shrink or retire from view; lurk out of sight; skulk.
(v) :
(intransitive, dialectal) To grumble secretly.
(v) :
(intransitive, dialectal) To pretend poverty.
(n) :
A diminutive of the male given name Mitchell.