noun
totalitarian
Refers to a person who advocates or supports totalitarianism, a political system where the state holds total authority over society.
彼は全体主義者として知られている。
He is known as a totalitarian.
全体主義 is the ideology of totalitarianism, while 全体主義者 refers to a person who adheres to that ideology.
Compound of 全体 (whole, total), 主義 (principle, -ism), and 者 (person). The term is a direct translation of the English 'totalitarian'.