The word 'unmerited' is built upon the core concept of 'merit,' which originates from the Latin verb merēre, meaning to earn or deserve. The noun meritum signified a reward or service that was earned, a concept that entered English via Old French. By adding the Old English adjectival suffix '-ed,' the word 'merited' is formed, meaning "having the quality of being deserved." The final layer is the prefix 'un-,' also from Old English, which systematically negates the adjective. Thus, the literal construction "not + deserved + having the quality of" logically yields the modern abstract meaning of something not justified by one's actions or qualities.

Structure: un (not) + merit (deserve) + ed (adjective suffix) - un: A prefix of Germanic origin (Old English) meaning "not," used to form negatives. - merit: From Latin meritum (a thing deserved, reward, service), from merēre (to deserve, earn). In this word, it functions as the core root. - ed: A suffix of Germanic origin (Old English) used to form adjectives from nouns or verbs, meaning "having the quality of."