English
human being
From human (adjective) + being (noun).
Latin hūmānus ‘of man’
Old French humain
Middle French humain ‘human’
Middle English humaigne
English human
The story
The word human was originally an adjective, thus requiring a base noun.
Today it means
noun A person; a large sapient, bipedal primate, with notably less hair than others of that order, of the species Homo sapiens.
Language periods are conventional ranges, not dates for this word.
Etymograph / human being