noun, noun or participle which takes 'suru', intransitive verb
acting arbitrarily on one's own authority; high-handed unilateral action
Describes making decisions and taking action alone without consulting others, often with a negative connotation of overstepping authority. Common in business and political contexts.
彼の独断専行にはみんなが困っている。
Everyone is troubled by his arbitrary, unilateral actions.
上司に相談せずに独断専行するのは避けるべきだ。
You should avoid acting on your own authority without consulting your boss.