Embittered; having a sour disposition or nature.
To exasperate; to irritate.
To make bitter or sour.
Noxious; evil.
Full of venom.
Powerful
Malignant; spiteful; hateful.
Producing venom (a toxin usually injected into an enemy or prey by biting or stinging) in glands or accumulating venom from food.
Toxic; poisonous.