Origin and history of superhuman

mid-15c., humain, humaigne, "human," from Old French humain, umain (adj.) "of or belonging to man" (12c.), from Latin humanus "of man, human," also "humane, philanthropic, kind, gentle, polite; learned, refined, civilized." This is in part from PIE *(dh)ghomon-, literally "earthling, earthly being," as opposed to the gods (from root *dhghem- "earth"), but there is no settled explanation of the sound changes involved. Compare Hebrew adam "man," from adamah "ground." Cognate with Old Lithuanian žmuo (accusative žmuni) "man, male person."

Human interest is from 1779. Human rights is attested by 1650s; human being by 1670s.

"Curst with hereditary love of pelf,

"I hate all human beings but myself ;

"Cross and perplex my wife, because she prov'd,

"Poor girl !—not rich enough to be belov'd."

["The Diaboliad, A Poem Dedicated to the Worst Man in His Majesty's Dominions," 1677] 

Human comedy "sum of human activities" translates French comédie humaine (Balzac); see comedy. Human relations is from 1640s as "interaction and connection among persons;" by 1916 as a department in a modern corporation; the phrase had been used from about 1912 in discussions of modern industry.

More than ever, perhaps, the successful manager must be a close student of men and their psychological processes. With the steady rise in intelligence, the increasing complexity of personal relations and the growing tendency of the public to interest themselves in industrial matters, the human element in factory management looms up with increasing importance; and no system of management can be successful that does not take this factor into account. [Dexter S. Kimball, "Principles of Industrial Organization," N.Y., 1913]

 Human resources is attested by 1907, American English, apparently originally among social Christians and based on natural resources. As a personnel management department in a government or corporation by 1977.

word-forming element of Latin origin meaning "above, over" in place or position; also in manner, degree, or measure, "over, beyond;" from Latin super (adverb and preposition) "above, over, on the top (of), beyond, besides, in addition to." This is from *(s)uper-, variant form of PIE root *uper "over."

In English words from Old French, it appears as sur-. Most of the Latin compounds in it are post-classical; it has been a living element in English since 15c. In Medieval Latin and Romanic languages it can be confused with related supra-, and some English words exist in both forms.

In 17c., when many English compounds in super- were coined in religious and spiritual writing, the notion in it was "beyond; not partaking of." Hence superordinary "excellent, better than what is common or usual" (1620s); supersensual "above or beyond the senses, imperceptible to human sense" (1680s); super-rational "that is above or beyond the scope of reason" (1680s).

But it also was used in the sciences in the sense of "in or to the highest or a very high degree," and has come to be felt popularly as "in an exaggerated degree, very much," as in supersensitive "extremely sensitive" (1839); supercool "very fashionable" (1970), which runs contrary to the old sense. Hence supersexual, attested by 1895 as "transcending sexuality; 'platonic' " and by 1968 as "sexual in an extreme degree." Also compare superhuman, which in the 1630s meant "divine, above or beyond what is human," but, by c. 1800, also, and typically since, meant "above the powers or nature of man."