Twist to one side (4)
I believe the answer is:
skew
'twist to one side' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for skew that I've seen before include "Place obliquely" , "Place(d) obliquely" , "Make biased or distorted" , "Not symmetrical" , "Oblique; distort" .)