· someone who has won first place in a competition

Synonym(s): champ, title-holder

Hypernym(s): rival, challenger, competitor, competition, contender

· someone who fights for a cause

Synonym(s): fighter, hero, paladin

Hypernym(s): defender, guardian, protector, shielder

· a person who backs a politician or a team etc.; "all their supporters came out for the game"; "they are friends of the library"

Synonym(s): supporter, protagonist, admirer, booster, friend

Hypernym(s): advocate, advocator, proponent, exponent

· someone who is dazzlingly skilled in any field

Synonym(s): ace, adept, sensation, maven, mavin, virtuoso, genius, hotshot, star, superstar, whiz, whizz, wizard, wiz

Hypernym(s): expert

· protect or fight for as a champion

Synonym(s): defend

Hypernym(s): back, endorse, indorse, plump_for, plunk_for, support

· holding first place in a contest; "a champion show dog"; "a prizewinning wine"

Synonym(s): prizewinning