The Latin word Imperator was a title originally roughly equivalent to commander during the period of the Roman Republic. It later went on to become a part of the titulature of the Roman Emperors as part of their cognomen. The English word emperor derives from the Latin word "imperator", via its French descendent empereur. There is no direct Latin equivalent of the English word emperor, however - the Roman Emperors gained authority from a large group of titles and positions, as opposed to any sin… (More on Imperator)