undefeatedWiktionary 原文中文来自 ECDICTadj.（选手或运动队）未被打败过的，未输过的; 不败构词拆分un-前缀(added to adjectives or past participles) not · (added to nouns) lack of+defeated词根/词干释义（英文）形容词 AdjectiveNever defeated; always victorious.词族派生词（2）undefeatedlyundefeatedness