HEGEMONY [hej-uh-moh-nee] NOUN Leadership or dominance, especially by one state or social group over others. EXAMPLES"The principal enjoyed his hegemony over the staff of the school.""This secured for Sparta the undisputed hegemony of the Peloponnese." SYNONYMS Authority, Command, Leadership, Power, Predominance. ANTONYMS Impotence, Impotency, Powerlessness. SOURCE