partiality
US /ˌpɑːr.ʃiˈæl.ə.t̬i/
UK /ˌpɑːr.ʃiˈæl.ə.t̬i/

1.
a particular liking or preference for something
:
•
She showed a clear partiality for the younger students.
•
He has a partiality for spicy food.
2.
unfair bias in favor of one thing or person compared with another
:
•
The judge was accused of partiality in his ruling.
•
To avoid any appearance of partiality, the committee members recused themselves.