biased

adjective
1
tending to show favour towards or against one group of people or one opinion for personal reasons; making unfair judgements
متعصب, جانبدارانه, غیرمنصفانه
opposite unbiased
2
having a particular interest in one thing more than others
متعصب, جانبدار, یک‌جانبه‌نگر
a school biased towards music and art
Managers are naturally biased towards projects showing a quick return.