emperor
noun
[ ˈɛmp(ə)rə ]
• a sovereign ruler of an empire.
• "he became emperor in 1930"
Similar:
ruler,
sovereign,
king,
monarch,
potentate,
lord,
overlord,
khan,
tsar,
kaiser,
mikado,
imperator,
ethnarch,
autarch,
• an orange and brown North American butterfly with a swift dodging flight, breeding chiefly on hackberries.
Origin:
Middle English (especially representing the title given to the head of the Roman Empire): from Old French emperere, from Latin imperator ‘military commander’, from imperare ‘to command’, from in- ‘towards’ + parare ‘prepare, contrive’.
