Indifferent to pain and pleasure (7)
I believe the answer is:
stoical
'indifferent to pain and pleasure' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for stoical that I've seen before include "Indifferent to pain and pleasure" , "Showing endurance" , "Long-suffering" , "Enduring hardship without complaining" , "Suffering patiently" .)