undiscountableWiktionary 原文构词拆分un-前缀(added to adjectives or past participles) not · (added to nouns) lack of+discount词根/词干+-able后缀Able to be done; fit to be done. · Relevant to or suitable to, in accordance with.词源说明From un- + discount + -able.释义（英文）形容词 AdjectiveThat which cannot be discounted.词族派生词（1）undiscountably