poisonous
poisonous (poiʹzə-nəs) adjective
1. Having the capability of harming or killing by or as if by poison; toxic or venomous.
2. Containing a poison.
3. Marked by apparent ill will: "poisonous hate . . . in his eyes" (Ernest Hemingway).
poiʹsonously adverb
poiʹsonousness noun
Synonyms: poisonous, mephitic, pestilent, pestilential, toxic, venomous, virulent. The central meaning shared by these adjectives is "having the destructive or fatal effect of a poison": a poisonous snake; a mephitic vapor; a pestilent agitator; pestilential jungle mists; toxic fumes; venomous jealousy; a virulent form of cancer.