Inhuman

1. a. Characterized by, or attended with, cruelty; as, an inhuman act or punishment.
2. a. Destitute of the kindness and tenderness that belong to a human being; cruel; barbarous; savage; unfeeling; as, an inhuman person or people.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.