tyrant

Synonyms for tyrant: dictator, autocrat, despot, oppressor, absolute ruler, authoritarian.

Definitions

A cruel and oppressive ruler.

A person exercising power or control in a cruel, unreasonable, or arbitrary way.

The citizens finally rose up to overthrow the cruel tyrant who had ruled their country for decades.

He acted like a total tyrant, demanding that everyone follow his strict rules without question.