titleholder (noun) champion: defeater in competition; preeminent supporter
Sinonime: advocate,
ally, backer, challenger, champ, conqueror,
defender, endorser, exponent, expounder,
guardian,
hero, heroine, medalist,
nonpareil, number one, numero uno,
paladin,
partisan,
patron,
proponent,
protector,
supporter, sympathizer, the greatest, titleholder, top dog, upholder, vanquisher, victor, vindicator,
warrior,
winnerAntonime: loser