challenger
US
UK challenger n: (sports competitor) (体育比赛中的)
SC 挑战者 tiǎo zhàn zhě
TC 挑戰者
TC 挑戰者
The boxing champ will face his toughest challenger yet in the next match.
legal challenger n: (law: person or party objecting to [sth])
SC 对法律提出质疑的人