undoubtedWiktionary 原文/ʌnˈdaʊtɪd/adj.无疑的，确实的中文释义来自 ECDICT构词拆解unun-前缀doubteddoubted词干un-(added to adjectives or past participles) not · (added to nouns) lack of词源链中古英语Middle English约 1150–1500 年undouted↓ 继承英语Englishundoubted词源说明From Middle English undouted, undoutid, equivalent to un- + doubted.释义形容词adjective1Without doubt; without question; certain.同族词派生词 2undoubtedness·undoubtedly