rumgumptious
/rʌmˈɡʌm(p)ʃəs/(also rumgumshus, rumgumtious) English regional (northern and East Anglian ) and Scottish
adjective
Strong-willed, headstrong; quarrelsome.
Origin
Late 18th century; earliest use found in John Hutton (1739–1806), writer on topography and etymology. From rumgumption: see -ious.