1. (noun)baron, big businessman, business leader, king, magnate, mogul, power, top executive, tycoon a very wealthy or powerful businessman Synonyms: power, exponent, index, ability, great power, might, tycoon, force, magnate, top executive, world power, superpower, business leader, powerfulness, mightiness, male monarch, baron, big businessman, major power, mogul, office, world-beater, queen, king