One who seizes upon the sovereign power in a state without legal right; an absolute ruler; a usurper. (Chiefly in reference to ancient rulers, and…

gen. An absolute ruler of a state, esp. one whose rule displaces that of a democratic government. (In quot. 1671 used of the Devil.)

figurative or transferred. An absolute monarch, an autocrat, emperor.

a monarch invested with absolute power.

figurative and in extended use. A ruler, a commander; a person considered as supreme in a particular sphere. Cf. emperor, n. 2.

One who rules arbitrarily; a despot.

Now usually in form mogul. An important, influential, or dominant person; an autocrat. Now chiefly (usually with distinguishing word): a business or…

One who rules as a sultan; an absolute ruler; a despot, tyrant, autocrat.

An absolute ruler; gen. a despot, tyrant.

A supreme and absolute ruler; spec. an epithet of Louis XIV of France. Also in Le Grand Monarque.

(A title of) an autocratic ruler.

After ancient Greek use: An absolute ruler of a country; hence, by extension, any ruler who governs absolutely or tyrannically; any person who…

A ruler who has absolute power of government. Also figurative.

The personality of a sultan; his sultanship, applied as a mock-title to a despot or tyrant.

A person who rules alone; an autocrat.

An absolute ruler; = autocrat, n.

one who advocates or practises autarky. Also attributive.