Unprejudiced (9)
I believe the answer is:
impartial
'unprejudiced' is the definition.
(I know that unprejudiced can be written as impartial)
This is the entire clue.
(Other definitions for impartial that I've seen before include "Fair, unprejudiced" , "Treating all rivals equally" , "not taking sides" , "Unbiased" , "Showing lack of favouritism" .)