ㄉㄨˊㄉㄨㄢˋduànㄉㄨˊㄒㄧㄥˊxíng

  1. 自己意思行事考慮別人意見官場現形·第一》:手下辦事可以獨斷獨行倘若請教那是百年不會成功。」獨斷專行」、獨行獨斷」。群策群力

to decide and act alone (idiom)​; to take arbitrary action, a law unto oneself