sovereign

One that exercises supreme, permanent authority, especially in a nation or other governmental unit, as.

A king, queen, or other noble person who serves as chief of state; a ruler or monarch.

A national governing council or committee.

A nation that governs territory outside its borders.

A gold coin formerly used in Great Britain.

Self-governing; independent.

Having supreme rank or power.

Paramount; supreme.

Of superlative strength or efficacy.