magnate

a person of rank, power, or influence in a particular field <a studio magnate who had the biggest stars in Hollywood at his beck and call> Synonyms baron, captain, czar (also tsar or tzar), king, lion, lord, mogul, monarch, Napoleon, prince, tycoon Related Words big boy, big cheese, bigfoot, biggie, big gun, big shot, big wheel, bigwig, fat cat, figure, heavy, heavyweight, honcho, kahuna, main man, mover and shaker, nabob, nawab, notable, personage, pooh-bah (also poo-bah), supremo [chiefly British], VIP; celebrity, personality, star, superstar; deity, demigod, god Near Antonyms half-pint, lightweight, small-timer; inferior, subordinate, underling; nobody, nothing, zero