unprecedentedWiktionary 原文/ʌnˈprɛsɪdɛntɪd/adj.空前的中文释义来自 ECDICT构词拆解unun-前缀precedentprecedent词干ed-ed后缀un-(added to adjectives or past participles) not · (added to nouns) lack of-edUsed to form past tenses of (regular) verbs. In linguistics, it is used for the base form of any past form. See -t for a variant.词源说明From un- + precedent + -ed.释义形容词adjective1Never before seen, done, or experienced; without precedent.同族词派生词 2unprecedentedly·unprecedentedness