Autocrat
(a.) An absolute sovereign; a monarch who holds and exercises the powers of government by claim of absolute right, not subject to restriction; as, Autocrat of all the Russias (a title of the Czar).
(a.) One who rules with undisputed sway in any company or relation; a despot.
Similar Words:
Autocarpian Autocarpous Autocatalysis Autocephalous Autochronograph Autochthon Autochthonal Autochthones Autochthonism Autochthonous