sicken in WordNet English dictionary

1. cause aversion in; offend the moral sense of
   "The pornographic pictures sickened us"
   disgust  revolt  nauseate  sicken  churn up 
   
2. get sick
   "She fell sick last Friday, and now she is in the hospital"
   sicken  come down 
   
3. upset and make nauseated
   "The smell of the food turned the pregnant woman's stomach"; "The mold on the food sickened the diners"
   sicken  nauseate  turn one's stomach 
   
4. make sick or ill
   "This kind of food sickens me"
   sicken