unsubstantialWiktionary 原文英美构词拆解unun-前缀substantialsubstantial词干un-(added to adjectives or past participles) not · (added to nouns) lack of词源说明From un- + substantial.释义形容词adjective1archaicInsubstantial.同族词派生词 3unsubstantialize·unsubstantially·unsubstantialness