Having a good prognosis (7)
I believe the answer is:
curable
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">having a good prognosis</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for curable that I've seen before include "Responsive to treatment" , "suitable for smoking?" , "Able to be made healthy" .)