sovereign
sov-er-eign
noun
A former British gold coin worth one pound sterling.
"He inherited a collection of gold sovereigns."
adjective
Possessing supreme power or authority; self-governing and independent.
"The nation is a sovereign state."
noun
A monarch or other supreme ruler of a country.
"The Queen is the sovereign of the UK."
Thesaurus
Synonyms: supreme, dominant, monarch, crowned head, free, autonomous, independent, self-governing