anointed king, boss, bwana, chef, chief, chieftain, church dignitary, crowned head, dynast, ecclesiarch, elder, emperor, employer, goodman, grand duke, guru, high chief, husband, imperator, king, king-emperor, kinglet, liege, liege lord, lord, lord paramount, majesty, master, monarch, padrone, paramount, paterfamilias, patriarch, patron, petty king, potentate, prince, prince consort, rabbi, royal, royal personage, royalty, ruler, sahib, seigneur, seignior, sovereign, starets, suzerain, teacher, tetrarch

For further exploring for "overlord" in Webster Dictionary Online

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