A dictator is a political leader who possesses absolute power. A dictatorship is a state ruled by one dictator or by a small clique. The word originated as the title of a magistrate in the Roman Republic appointed by the Senate to rule the republic in times of emergency (see Roman Dictator and justitium).
Like the term "tyrant" (which was originally a non-pejorative Ancient Greek title), and to a lesser degree "autocrat", "dictator" came to be used almost exclusively as a non-titular term for oppressive rule. In modern usage the term "dictator" is generally used to describe a leader who holds or abuses an extraordinary amount of personal power. Dictatorships are often characterised by some of the following: suspension of elections and civil liberties; proclamation of a state of emergency; rule by decree; repression of political opponents; not abiding by the rule of law procedures, and cult of personality. Dictatorships are often one-party or dominant-party states.
A wide variety of leaders coming to power in different kinds of regimes, such as military juntas, One-party states, dominant-party states, and civilian governments under a personal rule, have been described as dictators. They may hold left or right-wing views, or may be apolitical.