the word 'unjustly' is built upon the core latin adjective iustus, meaning "righteous" or "lawful," which itself derives from ius, signifying "law" or "right." the germanic negative prefix 'un-' was attached to the borrowed adjective 'just' in middle english to create the opposite meaning, "not fair." finally, the native english adverbial suffix '-ly' was appended, completing the logical formation of a word that describes an action performed in a manner contrary to fairness or justice.

Structure: un (not) + just (fair) + ly (adverb suffix) - un: a prefix of germanic origin, meaning "not," used to form negatives. - just: from latin iustus meaning "righteous, equitable." functions as the adjective root. - ly: a suffix of old english origin, used to form adverbs from adjectives.