If someone behaves in a way that shows no compassion, you could describe that person and his or her actions as inhuman. A teacher who assigns six hours of homework every night might be seen as inhuman.

When people talk about inhuman things, they're usually not talking about dogs or Martians — beings that are literally not human. Rather, this word involves humans who show no regard for their fellow humans. Murdering another person is an inhuman act; slavery is an inhuman institution. Inhuman acts can also be described as inhumane, meaning “heartless and cruel.”

Definitions of inhuman
  1. adjective
    without compunction or human feeling
    synonyms: cold, cold-blooded, insensate
    lacking and reflecting lack of pity or compassion
  2. adjective
    belonging to or resembling something nonhuman
    “something dark and inhuman in form”
    “a babel of inhuman noises”
    not human; not belonging to or produced by or appropriate to human beings
Word Family

Test prep from the experts

Boost your test score with programs developed by’s experts.

  • Proven methods: Learn faster, remember longer with our scientific approach.
  • Personalized plan: We customize your experience to maximize your learning.
  • Strategic studying: Focus on the words that are most crucial for success.


  • Number of words: 500+
  • Duration: 8 weeks or less
  • Time: 1 hour / week


  • Number of words: 500+
  • Duration: 10 weeks or less
  • Time: 1 hour / week