challengerKK [ˋtʃæləndʒɚ] /ˈtʃæləndʒɚ/名詞1挑戰者、挑戰的一方The champion will face a young challenger from Brazil next month.冠軍下個月將對上一位來自巴西的年輕挑戰者。2競爭者、挑戰者用於選舉The mayor leads his closest challenger by six points in the polls.市長在民調中領先最接近的競爭者六個百分點。3質疑者、異議者He became a vocal challenger of the company's safety claims.他成了公司安全說法的直言質疑者。