Despot (noun)

1. A ruler who has absolute power and authority, and uses it in a cruel and oppressive way.
2. A ruler who governs without legal restraint.

Origin:

From greek despotēs, meaning "master, ruler".

Examples:

1. The despot ruled the country with an iron fist.
2. The people lived in fear of the despot's secret police.
3. The despot's rule was marked by political repression and human rights violations.
4. The despot's regime was characterized by censorship and propaganda.
5. The despot's downfall was brought about by a popular uprising.