an unfavorable opinion or feeling formed beforehand or without knowledge, thought, or reason.

any preconceived opinion or feeling, either favorable or unfavorable.

unreasonable feelings, opinions, or attitudes, esp. of a hostile nature, regarding a racial, religious, or national group.

such attitudes considered collectively

The war against prejudice is never-ending.

damage or injury; detriment

a law that operated to the prejudice of the majority.

to affect with a prejudice, either favorable or unfavorable

His honesty and sincerity prejudiced us in his favor.

without prejudice, Law . without dismissing, damaging

or otherwise affecting a legal interest or demand.

adjective

one-sided , partial , partisan , prejudicial , prepossessed , tendentious , biased , jaundiced , myopic , narrow-minded , parochial