subhuman
adjective disapproving uk/ˌsʌbˈhjuː.mən/ us/ˌsʌbˈhjuː.mən/
非人的;不齿于人类的
having or showing behaviour or characteristics that are much worse than those expected of ordinary people
Their treatment of prisoners is subhuman. 他们以非人的手段对待囚犯。
Compare: superhuman