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1. Someone who has won first place in a competition
   - champ, title-holder
    
2. Someone who fights for a cause
   - fighter, hero, paladin [archaic]
    
3. A person who backs a politician or a team etc.
   - supporter, protagonist, admirer, booster, friend
    
4. Someone who is dazzlingly skilled in any field
   - ace, adept, sensation, maven, mavin, virtuoso, genius, hotshot, star, superstar, whiz, whizz, wizard, wiz, megastar

1. Protect or fight for as a champion
   - defend

1. Holding first place in a contest
   "a champion show dog"
   - prizewinning

Derived forms: championing, champions, championed

See also: best

Type of: advocate, advocator, back, challenger, competition, competitor, contender, defender, endorse, expert, exponent, guardian, indorse, plump for, plunk for, proponent, protector, rival, shielder, support

Encyclopedia: Champion, Michigan Champion, Alberta Champion Champion, NY Champion, Wisconsin Champion, New York Champion, Nebraska