dictator
n.
late 14c., from Latin dictator, agent noun from dictare (see dictate, v.). Transferred sense of "one who has absolute power or authority" in any sphere is from c.1600. In Latin use, a dictator was a judge in the Roman republic temporarily invested with absolute power.
〔蒋〕[dict=say言，说（dict也作dic），-or者；“口授命令者”→支配者，掌权者] 独裁者，专政者，口授者
〔李〕[dictate(e) v.命令；-or n.=person人→“person who dictates laws, commands, etc.发布法令者”→] n. absolute ruler独裁者，专政者