Prejudiced (6-6)
'prejudiced' is the definition.
(thesaurus)
This is all the clue.
(Other definitions for narrow-minded that I've seen before include "As a bigot" , "Having a blinkered viewpoint" , "Prejudiced; intolerant" , "Intolerant to others' views" , "Intolerantly focused" .)
'prejudiced' is the definition.
(biasing is a kind of prejudicing)
This is all the clue.
(Other definitions for biased that I've seen before include "not fair" , "Not impartial" , "Influenced unfairly" , "Having favourite" , "Having prejudice" .)