Dressmaker's cut (4)
I believe the answer is:
bias
'dressmaker's cut' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for bias that I've seen before include "could be binding" , "Inclination of prejudice" , "Large city in Florida" , "One-sided prejudice" , "(Bowls) irregular shape" .)