This article considers a longstanding problem: what does the word τύραννος mean? And if it means ‘bad / tyrannical ruler’, why are good rulers called tyrants? The solution proposed here is that tyranny is not a fixed state of being, or not being, but instead a gradual process of development. To be called a tyrant, a ruler need not embody all the stereotypical traits of tyranny. If tyranny is, by definition, unconstitutional and illegitimate rule, then there may be no clear (...) moment at which one ceases to be a general or king and becomes a tyrant, only a process by which the tyrant gradually strengthens his rule and develops the negative attributes associated with absolute and illegitimate power. A strong trend in not only the political theory of Plato and Aristotle, but also Greek poetry and historiography in general, is to trace the decline of tyrannies from initially good and popular governments to ones that are despotic and unpopular: the tyrant’s progress. (shrink)