unsubscribeWiktionary 原文构词拆分un-前缀(added to adjectives or past participles) not · (added to nouns) lack of+subscribe词根/词干词源说明From un- + subscribe.释义（英文）动词 Verb(intransitive) To cancel a subscription, especially to an online service.名词 NounAn unsubscription.词族派生词（1）unsubscriber