Find fault with suffering in style (7)
I believe the answer is:
panache
'in style' is the definition.
(I've seen this before)
'find fault with suffering' is the wordplay.
'find fault with' becomes 'pan' (to pan something is to criticise it heavily).
'suffering' becomes 'ache' (I've seen this before).
'pan'+'ache'='PANACHE'
(Other definitions for panache that I've seen before include "Style, elan" , "Flamboyant sense of style" , "Great style" , "Grand manner, theatricality" , "Swagger; theatricality" .)