adj. 25B6; adjective
inhuman treatment : CRUEL, harsh, inhumane, brutal, callous, sadistic, severe, savage, vicious, barbaric; monstrous, heinous, egregious; merciless, ruthless, pitiless, remorseless, cold-blooded, heartless, hard-hearted; unkind, inconsiderate, unfeeling, uncaring; Brit. informal beastly; dated dastardly.
hellish and inhuman shapes : NON-HUMAN, non-mortal, monstrous, devilish, ghostly; subhuman, animal; strange, odd, unearthly.
humane.