1. Get sick
   "He sickened with the flu just before his vacation";
   - come down
    
2. Make sick or ill
   "This kind of food sickens me"
    
3. Cause feelings of nausea or disgust
   "The mould on the food sickened the diners";
   - nauseate, turn one's stomach
    
4. Cause aversion in; offend the moral sense of
   "The pornographic pictures sickened us";
   - disgust, revolt, nauseate

Derived forms: sickened, sickening, sickens

Type of: decline, disgust, gross out [informal], harm, repel, repulse, revolt, worsen

Encyclopedia: Sicken