autocrat
[noun]
Synonyms: dictator, absolutist, despot, tyrant

[TahlilGaran] English Synonym Dictionary ▲

au‧to‧crat /ˈɔːtəkræt $ ˈɒː-/ noun [countable]

1. someone who makes decisions and gives orders to people without asking them for their opinion

2. a ruler who has complete power over a country
—autocratic /ˌɔːtəˈkrætɪk◂ $ ˌɒː-/ adjective:
an autocratic leadership style
—autocratically /-kli/ adverb

[TahlilGaran] Dictionary of Contemporary English ▲