Synonyms of 'deleterious'

baleful, baneful, corrosive, damaging, deadly, destructive, detrimental, disadvantageous, harmful, hurtful, injurious, lethal, malevolent, malign, malignant, mischievous, noisome, noxious, ominous, pernicious, prejudicial, ruinous, toxic, unfavorable, unprofitable, unrewarding, useless, venomous, vicious, virulent, worthless