Synonyms and related words :
Simon Legree, absolute monarch, absolute ruler, all-powerful ruler, arrogator, autarch, authoritarian, authoritative, autocrat, caesar, commissar, czar, despot, disciplinarian, doctrinaire, driver, duce, hard master, martinet, oligarch, oppressor, overlord, pharaoh, slave driver, stern, stickler, strong man, tyrant, usurper, warlord