dictatorial
adjective /ˌdɪktəˈtɔːriəl/
  /ˌdɪktəˈtɔːriəl/
(disapproving)- connected with or controlled by a dictator- a dictatorial ruler
- a dictatorial regime
 Extra Examples- He still remembers the dictatorial reign of Stalin's last years.
- The military leader gradually assumed more and more dictatorial powers.
 
- using power in an unreasonable way by telling people what to do and not listening to their views or wishes- dictatorial behaviour
 Extra Examples- He described the proposals as ‘unilateral, arbitrary and dictatorial’.
- He didn't want to seem too dictatorial.
- She was fed up with his dictatorial attitude.
 
Word Originearly 18th cent.: from Latin dictatorius (from dictator: from dictat- ‘dictated’, from the verb dictare) + -al.