B1adjectivenaturehealth
US/ˈpɔɪ.zən.əs/
UK/ˈpɔɪ.zən.əs/
able to harm or kill you if you eat, drink or touch it
In context
Some mushrooms in this forest are poisonous, so do not pick them.
The poisonous gas spread quickly through the factory.
Most snakes here are not poisonous to humans.
Words that go with poisonous
adjective + noun
- poisonous plantThe garden contains a poisonous plant.
- poisonous mushroomA poisonous mushroom can look like a safe one.
- poisonous snakeBe careful: that is a poisonous snake.
- poisonous gasPoisonous gas leaked from the pipe.
adverb + adjective
- highly poisonousThe berries are highly poisonous.
adjective + preposition
- poisonous toChocolate is poisonous to dogs.
Common mistakes
Incorrect:
poisoned mushroomCorrect: poisonous mushroom