unhuman

adjective

1. lacking human attributes: The unhuman figures in his earlier work were not well received.
2. of a quality or power beyond what is human; superhuman: Her hands clenched the chair with unhuman strength.
3. not a member of the human species: Of our unhuman relatives, I love the mountain gorillas best.

adj.1540s, “inhumane, cruel,” from un- (1) “not” + human. Meaning “superhuman” is from 1782.