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)