Part of speech:
Harmful or destructive:
Characterized by, causing, or promoting the rapid onset of severe illness. Used of a disease or toxin.
Harmful to the mind or morals; corrupting:
Causing or able to cause harm; hurtful
Poisonous or poisoned
(Computing) Causing a sudden end to the running of a program.
The definition of lethal is something very harmful or destructive, especially something that could cause death.
Malignant; spiteful; malicious
Of or caused by mephitis
Capable of injuring or killing by poison
Find another word for toxic. In this page you can discover 27 synonyms, antonyms, idiomatic expressions, and related words for toxic, like: poisonous, virulent, noxious, harmful, deadly, poison, fatal, lethal, venomous, harmless and nonpoisonous.