subhumanPronunciation: /sʌbˈhjuːmən/Translate subhuman | into German | into Italian Definition of subhuman adjective of a lower order of being than humans. Zoology (of a primate) closely related to humans. not worthy of a human being; debased or depraved:he regards all PR people as subhuman noun a subhuman creature or person. subhuman in other Oxford dictionaries Definition of subhuman in the US English dictionary