noun
autocrat
AW-tuh-krat/ˈɔːtəkræt/
A person who holds or demands complete power over others.
The autocrat issues orders without consulting the council or accepting criticism.

Etymology
Self and power combine in the image of a person ruling alone. An autocrat holds governmental power without restrictions, rather than exercising authority limited by others.
In context
If we would not submit to an emperor, we should not submit to an autocrat of trade with power to prevent competition and to fix the price
More examples
- Employees described the director as an autocrat.
- The uprising challenged a dynasty of powerful autocrats.
- An autocrat may treat disagreement as disobedience.
Forms
autocrat · autocrats
autocratic adjective — Demanding obedience or exercising absolute power.