What does tryant mean in greek?

In Greek, the term "tyrant" (τύραννος, tyrannos) originally referred to a ruler who seized power unconstitutionally or without lawful right. It did not necessarily carry a negative connotation in its early usage; some tyrants were seen as benevolent leaders who challenged the aristocracy. Over time, the term evolved to imply a ruler who exercises oppressive or arbitrary power over others.