Biased; distorted (6)
I believe the answer is:
skewed
I believe this clue is a double definition.
'biased' is the first definition.
(I've seen this in another clue)
'distorted' is the second definition.
(I've seen this in another clue)
(Other definitions for skewed that I've seen before include "with bias" , "'Slanted, oblique (6)'" , "Not symmetrical" , "Turned or twisted around" , "Biased, distorted" .)