'Potentate' definitions:

Definition of 'potentate'

From: WordNet
noun
A ruler who is unconstrained by law [syn: dictator, potentate]

Definition of 'Potentate'

From: GCIDE
  • Potentate \Po"ten*tate\, n. [LL. potentatus, fr. potentare to exercise power: cf. F. potentat. See Potent, a.] One who is potent; one who possesses great power or sway; a prince, sovereign, or monarch. [1913 Webster]
  • The blessed and only potentate. --1 Tim. vi. 15. [1913 Webster]
  • Cherub and seraph, potentates and thrones. --Milton. [1913 Webster]

Synonyms of 'potentate'

From: Moby Thesaurus