The Oxford Thesaurus An A-Z Dictionary of Synonyms - superiorityn.

1) ascendancy, pre-eminence, supremacy, leadership, lead, dominance, predominance, primacy, hegemony: Her superiority in the field is unchallenged. 2) excellence, greatness, peerlessness, matchlessness, inimitability, superlativeness, prominence, eminence, importance, distinction, prestige, renown: All commented on the superiority of Mark's contribution.