- atrocity, atrociousness, barbarity, barbarousness, heinousness - the quality of being shockingly cruel and inhumane
--1 is a kind of inhumaneness, inhumanity
- atrocity, inhumanity - an act of atrocious cruelty
--2 is a kind of cruelty, inhuman treatment
--2 has particulars:brutality, barbarity, barbarism, savagery; outrage; enormity