'Inhumanity' definitions:

Definition of 'inhumanity'

From: WordNet
noun
The quality of lacking compassion or consideration for others [syn: inhumaneness, inhumanity] [ant: humaneness]
noun
An act of atrocious cruelty [syn: atrocity, inhumanity]

Definition of 'Inhumanity'

From: GCIDE
  • Inhumanity \In`hu*man"i*ty\, n.; pl. Inhumanities. [L. inhumanitas: cf. F. inhumanit['e].] The quality or state of being inhuman or inhumane; cruelty; barbarity. [1913 Webster]
  • Man's inhumanity to man Makes countless thousands mourn. --Burns. [1913 Webster]