capable of injuring or killing by or as by poison; containing, or having the effects of, a poison; toxic; venomous
- a. Containing or being a poison: poisonous fumes.b. Capable of harming or killing by poison: poisonous tentacles.
- a. Full of ill will; malicious or spiteful: a poisonous look.b. Harmful or destructive: a poisonous precedent.
(comparative more poisonous, superlative most poisonous)
From poison +"Ž -ous