Prejudicial

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.

Thesaurus Entries

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