atrocity atrocity /əˈtrɑːsəti/

noun

1. An act of atrocious cruelty  ( atrocity , inhumanity )
   an act of atrocious cruelty
   
2. The quality of being shockingly cruel and inhumane  ( atrociousness , atrocity , barbarity , barbarousness , heinousness )
   the quality of being shockingly cruel and inhumane