viperish (adjective) venomous: poisonous; hateful
Sinonime: accidentally on purpose,
antagonistic,
baleful, baneful, catty, cussed,
deadly,
destructive,
dirty,
evil,
hostile,
lethal, malefic,
malevolent,
malicious,
malign,
malignant,
mean, mephitic,
noxious,
ornery*, rancorous,
savage,
spiteful,
toxic, toxicant,
vicious,
vindictive, viperish, viperous,
virulent, waspish
Antonime: kind, praising, unpoisonous