'human-hater' originates from Modern English, specifically the words 'human' and 'hater', where 'human' meant 'of or relating to people' and 'hater' is an agent form from the verb 'hate' meaning 'to feel hatred'.

'human' ultimately comes from Latin 'humanus' (via Middle English), and 'hate' comes from Old English words such as 'hatian' or 'hatan' that developed into the Middle English 'haten' and modern English 'hate', producing the agent noun 'hater'.

Initially, the compound simply described 'one who hates people', and this basic meaning has remained stable into modern usage.