poisonous

Definitions

Containing or producing a substance that causes illness or death when absorbed or ingested.

Extremely unpleasant, harmful, or malicious in nature or influence.

Examples

Some species of mushrooms are highly poisonous and should never be consumed.

The explorer had to be careful not to touch the poisonous plants growing along the trail.

Synonyms

toxic venomous noxious lethal deadly harmful virulent

Antonyms

harmless nontoxic safe wholesome beneficial innocuous salubrious