Having a chemical nature that is harmful to health or lethal if consumed or otherwise entering into the body in sufficient quantities.
Severely negative or harmful.
Appearing grossly unwell; characterised by serious, potentially life-threatening compromise in the respiratory, circulatory or other body systems.
Hateful or strongly antipathetic.
Capable of causing damage or dysfunction by toxicity; (broadly) poisonous.
A toxic or poisonous substance.