1. To be vindictive is to be purposely unforgiving or to exhibit vengeful behavior (typically at the expense of another person). Making critical or intentionally damaging remarks or attempting to undermine (a person) out of spite or revenge.
  2. Donald Trump acted in a spiteful manner when he lambasted Rosie O'Donnell, calling her "obnoxious and dumb"; he was seeking revenge after she had criticized him on-air (Trump).
  3. Fridah Kahlo's "The Two Fridas" appears to be revengeful and violent as the artist portrays herself cutting out her own heart.
    The Two Fridas