Meaning

• Having a chemical nature that is harmful to health or lethal if consumed or otherwise entering into the body in sufficient quantities.

  "Tobacco smoke contains many toxic substances."

• Appearing grossly unwell; characterised by serious, potentially life-threatening compromise in the respiratory, circulatory or other body systems.

  "The child appeared toxic on arrival at the hospital."

• Severely negative or harmful.

  "a toxic environment that promoted bullying"

• (of a person) Hateful or strongly antipathetic.

  "It is not good to be around toxic people."