Dictatorship
Despotism
noun, verbal noun, の adjective
When one person is in a position to judge everyone alone by themselves, they're definitely a part of a dictatorship. One person should never be alone to judge everyone because that's how dictators are made and they're not so great.
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
社長が独裁的だからあの会社では働きたくない。
I don't want to work at that company because the president runs it like a dictatorship.
俺は世界一の独裁者になるんだ。
I’ll become the best dictator in the world.