- poisonous
- adj1. venomous, virulent, (in prescriptions) venenosus, toxic, morbific; fell, baneful, mephitic, viperous, Rare. virose, Archaic. venenose; pestilential, pestiferous, infective, infectious, pestilent, contaminative, contagious, leprous, septic.2. pernicious, dangerous, hazardous, deleterious, detrimental, destructive, ruinous; deadly, lethal, fatal, mortal, mortiferous, Archaic. lethiferous; harmful, injurious, nocuous, hurtful, nocent, baleful, noisome; noxious, malicious, malign, malignant, menacing; insalubrious, unhealthful, unhygienic, unsanitary.3. malevolent, maleficent, malefic, devilish, demonic, diabolic; vicious, rancorous, invidious; vindictive, revengeful, vengeful, spiteful; slanderous, libelous, calumnious, defamatory; acrimonious, caustic, bitter, envenomed, vitriolic.
A Note on the Style of the synonym finder. 2014.