(a.) Tending to impair or damage; injurious; mischievous; occasioning loss or injury; as, hurtful words or conduct.

acute afflictive agonizing atrocious baleful baneful biting corroding corrosive corrupting corruptive counterproductive cramping cruel cutting damaging deadly deleterious destructive detrimental disadvantageous disserviceable distressing excruciating gnawing grave griping hard harmful harrowing harsh hurting injurious lethal malefic malevolent malicious malign malignant mean mischievous nasty noisome noxious ominous painful paroxysmal pernicious piercing poignant poisonous prejudicial pungent racking scatheful severe sharp shooting spasmatic spasmic spasmodic spiteful stabbing stinging tormenting torturous toxic unkind venenate veneniferous venenous venomous vicious virulent wounding