dictator
noun
[ dɪkˈteɪtə ]
• a ruler with total power over a country, typically one who has obtained control by force.
Similar:
autocrat,
monocrat,
absolute ruler,
tyrant,
despot,
oppressor,
absolutist,
totalitarian,
authoritarian,
supremo,
Big Brother,
autarch,
Origin:
late Middle English: from Latin, from dictat- ‘dictated’, from the verb dictare (see dictate).