Wiktionary
a. That does not heal.
Usage examples of "unhealing".
Jeska let go of the unhealing wound and gripped the arms of the centaur.
The sword had found its final resting place, buried in another unhealing wound.
It would end these torments and make all those unhealing wounds inconsequential.
The jagged red line on her suit represented the unhealing wound on her belly.
Beneath lay an unhealing wound, jagged counterpart to the cut on his sister.
The unhealing wound on her belly had festered into a wound on the world.
It could heal the rot on his chest and cleanse the unhealing wound on his gut, but it lay behind Phage.
I feel sure that here before me were assembled those, in whose unhealing hearts the sight of those bleak tablets sympathetically caused the old wounds to bleed afresh.