A totalitarian leader of a country, nation, or government.
A person who dictates text (e.g. letters to a clerk).
A tyrannical boss or authority figure.
A magistrate without colleague in republican Ancient Rome, who held full executive authority for a term granted by the senate (legislature), typically to conduct a war.
A leader of a group of people, especially an unofficial group.
A person who starts and leads a disturbance (such as a riot), a conspiracy, or a criminal gang.