Inclined to be biased (7)
I believe the answer is:
slanted
This clue is a double definition.
'inclined' is the first definition.
('slanted' can be similar in meaning to 'inclined')
'be biased' is the second definition.
('slanted' can be a synonym of 'biased')
'to' is the link.
(Other definitions for slanted that I've seen before include "At an angle" , "in italic format?" , "Sloping, leaning" , "Leaning; biased" , "Sloped, one-sided" .)