Obstinate, perverse (8)
I believe the answer is:
contrary
This clue is a double definition.
'obstinate' is the first definition.
(I know that obstinate can be written as contrary)
'perverse' is the second definition.
(I know that perverse can be written as contrary)
(Other definitions for contrary that I've seen before include "Opposite in meaning" , "Exact opposition" , "At variance; awkward" , "Carry out (command)" , "Perverse, obstinate" .)