専断横行

せんだんおうこう

noun

•

prevalence of arbitrariness, rife with arbitrary decisions (acting on one's own authority)(yojijukugo)

専	specialty, exclusive, mainly, solely
断	severance, decline, refuse, apologize, warn, dismiss, prohibit, decision, judgement, cutting
横	sideways, side, horizontal, width, woof, unreasonable, perverse
行	going, journey, carry out, conduct, act, line, row, bank