1. (a.) Full of venom; noxious to animal life; poisonous; as, the bite of a serpent may be venomous.

2. (a.) Having a poison gland or glands for the secretion of venom, as certain serpents and insects.

3. (a.) Noxious; mischievous; malignant; spiteful; as, a venomous progeny; a venomous writer.

acerbic acrid acute antagonistic antipathetic baleful baneful belligerent bitter catching caustic clashing colliding communicable conflicting contagious corroding corrosive corrupting corruptive counterproductive cutting damaging dangerous deadly deleterious despiteful destructive detrimental disadvantageous disserviceable distressing drastic embittered envenomed excessive exorbitant extravagant extreme fierce full of hate furious great harmful hateful hostile hurtful immoderate infectious infective injurious intemperate intense keen lethal malefic maleficent malevolent malicious malign malignant mean mephitic miasmal miasmatic miasmic mischievous noisome noxious ominous outrageous pernicious pestiferous pestilential piercing poison poisonous prejudicial quarrelsome rancorous repugnant rigorous rough savage scatheful set against severe sharp sore spiteful splenetic splitting tough toxic toxicant toxiferous unconscionable vehement venenate veneniferous venenous vicious violent viperish viperlike viperous virulent vitriolic