noun

An extremely wicked or cruel act, typically one involving physical violence or injury.

war atrocities

act of barbarity,act of brutality,act of savagery,act of wickedness,cruelty,abomination,enormity,outrage,horror,monstrosity,obscenity,iniquity,violation,crime,transgression,wrong,wrongdoing,offence,injury,affront,scandal,injustice,abuse