noun
ringleader; accomplished villain; cunning leader
Refers to a bold, ruthless, and cunning person who leads others in wrongdoing or rebellion. Often used in historical or dramatic contexts. Not an everyday word; carries a literary or slightly archaic flavor.
彼は戦国時代の梟雄として知られている。
He is known as a cunning leader of the Warring States period.
その政治家は政界の梟雄と呼ばれた。
That politician was called a ringleader of the political world.