Skip to definition.
Get the FREE one-click dictionary software for Windows or the iPhone/iPad and Android apps

Adjective: unforgiving  ,ún-for'gi-ving [N. Amer], ,ún-fu'gi-ving [Brit]
  1. Unwilling or unable to forgive or show mercy
    "a surly unforgiving old woman"
  2. Not to be placated, appeased or moved by entreaty
    "unforgiving determination";
    - grim, inexorable, relentless, stern, unappeasable, unrelenting

See also: implacable, revengeful, vengeful, vindictive

Antonym: forgiving