Word Study
superpower
OXFORD DICTIONARY
superpower, n. a State of supreme power and influence, esp. the US and the USSR.
THESAURUS
superpower
ally, amperage, archduchy, archdukedom, armipotence, authority, beef, black power, body politic, brute force, buffer state, captive nation, charge, charisma, chieftaincy, chieftainry, city-state, clout, cogence, cogency, colony, commonweal, commonwealth, compulsion, country, county, dint, domain, dominion, drive, duchy, dukedom, duress, earldom, effect, effectiveness, effectuality, empery, empire, energy, flower power, force, force majeure, forcefulness, free city, full blast, full force, grand duchy, influence, kingdom, land, main force, main strength, mana, mandant, mandate, mandated territory, mandatee, mandatory, might, might and main, mightiness, moxie, muscle power, nation, nationality, pizzazz, polis, polity, poop, possession, potence, potency, potentiality, power, power pack, power structure, power struggle, powerfulness, prepotency, principality, principate, productiveness, productivity, protectorate, province, puissance, pull, punch, puppet government, puppet regime, push, realm, republic, satellite, seneschalty, settlement, sinew, sovereign nation, state, steam, strength, strong arm, sultanate, superiority, territory, toparchia, toparchy, validity, vehemence, vigor, vim, virility, virtue, virulence, vitality, wattage, weightFor further exploring for "superpower" in Webster Dictionary Online