(n.) The disposition to favor and promote the interest of one person or family, or of one class of men, to the neglect of others having equal claims; partiality.

bent bias discrimination forejudgment inclination inequality interest involvement jaundice jaundiced eye leaning nepotism one-sidedness parti pris partialism partiality partisanism partisanship preconception predilection predisposition preference preferential treatment preferment prejudgment prejudice prepossession proclivity twist undetachment undispassionateness unneutrality