unexpressibleWiktionary 原文英美构词拆解unun-前缀expressibleexpressible词干un-(added to adjectives or past participles) not · (added to nouns) lack of词源说明From un- + expressible. Piecewise doublet of inexpressible.释义形容词adjective1Impossible to express; inexpressible.同族词派生词 2unexpressibleness·unexpressibly