1. (a.) Biased, possessed, or blinded by prejudices; as, to look with a prejudicial eye.

2. (a.) Tending to obstruct or impair; hurtful; injurious; disadvantageous; detrimental.

bad baleful baneful corroding corrosive corrupting corruptive counterproductive damaging deadly deleterious detrimental differential disadvantageous discriminative disserviceable distressing evil forejudged harmful hurtful inimical injurious judged beforehand lethal malefic malevolent malign malignant mischievous noisome noxious ominous pernicious poisonous preconceived preconceptual preconcluded predecided predetermined predisposed predispositional prejudged prejudging presumed presupposed presurmised scatheful toxic unadvantageous unfavorable unprofitable unrewarding useless venenate veneniferous venenous venomous vicious virulent worthless