Synonyms of unforgiving

Adjective

1. unforgiving (vs. forgiving), revengeful, vindictive, vengeful

usage: unwilling or unable to forgive or show mercy; "a surly unforgiving old woman"

2. grim, inexorable, relentless, stern, unappeasable, unforgiving, unrelenting, implacable (vs. placable)

usage: not to be placated or appeased or moved by entreaty; "grim determination"; "grim necessity"; "Russia's final hour, it seemed, approached with inexorable certainty"; "relentless persecution"; "the stern demands of parenthood"

Definition and meaning of unforgiving (Dictionary)