虐待【ぎゃくたい】
abuse, ill-treatment, maltreatment, mistreatment, cruelty
虐殺【ぎゃくさつ】
slaughter, massacre
暴虐【ぼうぎゃく】
tyranny, atrocity
残虐【ざんぎゃく】
cruel, brutal, savage, barbarous
虐げる【しいたげる】
to oppress, to persecute, to tyrannize
自虐【じぎゃく】
self-torture, masochism, inflicting damage to oneself