Without love, unforgiving, slanderous, without self-control, brutal, not lovers of the good
NIV
[They will be] without natural [human] affection (callous and inhuman), relentless (admitting of no truce or appeasement); [they will be] slanderers (false accusers, troublemakers), intemperate and loose in morals and conduct, uncontrolled and fierce, haters of good.
AMP
Without natural affection, trucebreakers, false accusers, incontinent, fierce, despisers of those that are good,
KJV
Which in anger struck down peoples with unceasing blows, and in fury subdued nations with relentless aggression.
NIV
Who smote the peoples in anger with incessant blows and trod down the nations in wrath with unrelenting persecution--[until] he who smote is persecuted and no one hinders any more.
AMP
He who smote the people in wrath with a continual stroke, he that ruled the nations in anger, is persecuted, and none hindereth.
KJV