What is the meaning of sickening?

verb

• Cause aversion in; offend the moral sense of.
  • usage: "The pornographic pictures sickened us"
  • synonyms: disgust, revolt, nauseate, sicken, churn up
• Get sick.
  • usage: "She fell sick last Friday, and now she is in the hospital"
  • synonyms: sicken, come down
• Upset and make nauseated.
  • usage: "The smell of the food turned the pregnant woman's stomach"; "The mold on the food sickened the diners"
  • synonyms: sicken, nauseate, turn one's stomach
• Make sick or ill.
  • usage: "This kind of food sickens me"
  • synonyms: sicken

adjective

• Causing or able to cause nausea.
  • usage: "a nauseating smell"; "nauseous offal"; "a sickening stench"
  • synonyms: nauseating, nauseous, noisome, queasy, loathsome, offensive, vile