Venomous

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.

Thesaurus Entries

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