祸首罪魁

main offender, criminal ringleader (idiom); main culprit / fig. main cause of a disaster

old variant of 禍|祸[huo4]

disaster / misfortune / calamity

chief offender / main culprit

head / chief / first (occasion, thing etc) / classifier for poems, songs etc

guilt / crime / fault / blame / sin

variant of 罪[zui4], crime

criminal ringleader / chief culprit / fig. cause of a problem

chief / head / outstanding / exceptional / stalwart