adj. 25B6; adjective DAMAGING, injurious, detrimental, dangerous, deleterious, unfavourable, negative, disadvantageous, unhealthy, unwholesome, hurtful, baleful, destructive; noxious, hazardous, poisonous, toxic, deadly, lethal; bad, evil, malign, malignant, malevolent, corrupting, subversive, pernicious.
beneficial.