potentate

/ˈpoʊtənˌteɪt/
noun
  1. A ruler who has great power, especially a monarch or dictator.
    • The potentate signed a treaty with the neighboring kingdom.
    • The ancient potentate lived in a grand palace with hundreds of servants.
    • Citizens rebelled against the cruel potentate who taxed them heavily.
Antonyms
What does "potentate" mean? | whatsthatwordmean | whatsthatwordmean