noun a monarch; a king, queen, or other supreme ruler. a person who has supreme power or authority.
Silver Sun Context
Sovereign in the context of the Republic refers to the executive officer who wields ultimate decision making authority and is recognized as the head of state or "guild leader" in purely game terms. While the Republic may be part of a larger community or nation state to include the Kingdom of Hyperion or game faction, the autonomous and independent exercise of authority recognizes the Doge or Duke as the sovereign. It allows for the unique cultural and societal elements of the Republic to exercise congruity creating a logical flow of powers, rights, and authorities to the rest of the Ministries, Signoria, and other governing entities.