See despot in Webster's New World Roget's A-Z Thesaurus II
noun
An absolute ruler, especially one who is harsh and oppressive:
Big Brother, dictator, führer, man on horseback, oppressor, strongman, totalitarian, tyrant. See overOne who imposes or favors absolute obedience to authority:
authoritarian, autocrat, dictator, martinet, totalitarian, tyrant. See over
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