A dictator is an authoritarian ruler (e.g. absolutist or autocratic) who assumes sole and absolute power without hereditary ascension such as an absolute monarch. When other states call the head of state of a particular state a dictator, that state is called a dictatorship. The word originated as the title of a magistrate in ancient Rome appointed by the Senate to rule the republic in times of emergency (see Roman dictator and justitium).

Like the term tyrant, originally a respectable Ancient Greek title, and to a lesser degree autocrat, it came to be used almost exclusively as a non-titular term for oppressive, even abusive rule, yet had rare modern titular uses.Fact: date=August 2008

In modern usage, the term "dictator" is generally used to describe a leader who holds and/or abuses an extraordinary amount of personal power, especially the power to make laws without effective restraint by a legislative assembly. Dictatorships are often characterized by some of the following traits: suspension of elections and of civil liberties; proclamation of a state of emergency; rule by decree; repression of political opponents without abiding by rule of law procedures; these include single-party state, and cult of personality.Fact: date=August 2008

The term "dictator" is comparable to (but not synonymous with) the ancient concept of a tyrant, although initially "tyrant", like "dictator", did not carry negative connotations. A wide variety of leaders coming to power in a number of different kinds of regimes, such as military juntas, single-party states and civilian governments under personal rule, have been described as dictators.Fact: date=August 2008

Modern era

Mainly Latin American, Asian, and African nations, especially developing nations, have known many dictatorships, usually by military leaders at the head of a junta, either claiming to constitute a revolution or to reestablish order and stability.

In popular usage in western nations, "dictatorship" is often associated with brutality and oppression. As a result, it is often also used as a term of abuse for political opponents, for example, Henry Clay's dominance in Congressfirst as Speaker of the House and later as a member of the Senateled to his nickname, "the Dictator."Fact: date=July 2008 The term has also come to be associated with megalomania. Many dictators create a cult of personality and have come to favor increasingly grandiloquent titles and honours for themselves. For instance, Idi Amin Dada, who had been a British army lieutenant prior to Uganda's independence from Britain in October 1962, subsequently styled himself as "His Excellency President for Life Field Marshal Al Hadji Dr. Idi Amin, VC, DSO, MC, Lord of All the Beasts of the Earth and Fishes of the Sea and Conqueror of the British Empire in Africa in General and Uganda in Particular".Fact: date=July 2008 In "The Great Dictator" (1940), Charlie Chaplin satirized not only Hitler but the institution of dictatorship itself.