champion

Meanings

• someone who has won first place in a competition
• someone who fights for a cause
• a person who backs a politician or a team etc.
• someone who is dazzlingly skilled in any field
• protect or fight for as a champion
• holding first place in a contest
  • "a champion show dog"

Synonyms

ace, adept, admirer, booster, champ, defend, fighter, friend, genius, hero, hotshot, maven, mavin, paladin, prizewinning, protagonist, sensation, star, superstar, supporter, title-holder, virtuoso, whiz, whizz, wiz, wizard