despot
n despot [ˈdespot, (American ) -pət]
a person (usually the king or ruler of a country) with absolute power, often a tyrant.
Definition of DESPOT
1a : a Byzantine emperor or prince
b : a bishop or patriarch of the Eastern Orthodox Church
c : an Italian hereditary prince or military leader during the Renaissance
2a : a ruler with absolute power and authority
b : a person exercising power tyrannically
:-k :-s