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English definition of “champion”

champion

noun [C] uk   /ˈtʃæm.pi.ən/ us  

champion noun [C] (WINNER)

B1 (informal champ) someone or something, especially a person or animal, that has beaten all other competitors in a competition: an Olympic champion She is the world champion for the third year in succession. The defending champion will play his first match of the tournament tomorrow. Who are the reigning European football champions?Winners and losers

champion noun [C] (SUPPORTER)

C2 a person who enthusiastically supports, defends, or fights for a person, belief, right, or principle: She has long been a champion of prisoners' rights/the disabled/free speech.Activism and pressure groupsSupporters, members and defendersBelievers and non-believers

champion

verb [T] uk   /ˈtʃæm.pi.ən/ us  
to support, defend, or fight for a person, belief, right, or principle enthusiastically: He has championed constitutional reform for many years.Backing, supporting and defendingDefending and protecting

champion

adjective, exclamation uk   /ˈtʃæm.pi.ən/ Northern English informal us  
excellentInformal words for goodGood, better and bestQuite good, or not very good
(Definition of champion from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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