Autocracy
WordNet
noun
(1) A political theory favoring unlimited authority by a single individual
(2) A political system governed by a single individual
WiktionaryText
Etymology
From Ancient Greek αυτοκρατής “one who governs alone”, from αὐτός “single, self, same, alone” + κράτος “power”.
Noun
- A form of government in which unlimited power is held by a single individual.