Uncomplaining in the face of adversity (7)
I believe the answer is:
stoical
'uncomplaining in the face of adversity' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for stoical that I've seen before include "Seeming to be unaffected by pleasure or pain" , "Brave in the face of pain" , "Indifferent to pain and pleasure" , "Able to bear pain" , "able to endure suffering" .)