harmful synonyms

bad serious fell wild ill killing evil painful unfortunate damaging cruel fatal toxic adverse disastrous costly wicked sore vicious devastating deadly destructive brutal sinister lethal corrupt unlucky dire mortal aching poisonous catastrophic malignant treacherous distressing detrimental ominous malicious menacing subversive grievous unhealthy mischievous wounding crippling murderous satanic sinful insidious pernicious noxious objectionable malevolent corrosive prejudicial venomous hurtful virulent devouring deleterious inimical ruinous injurious baleful incendiary corrupting pricking devilish malign cataclysmic disadvantageous fiendish internecine calamitous unwholesome consumptive corroding noisome unpropitious diabolic demoniac stunting baneful ill-omened habit-forming unhealthful pestilential maleficent annihilative malefic mephitic felonious pestiferous morbific