sicken at something—experience strong revulsion at smth.:
- The four of us who sickened at the idea of partaking of the horrid meal withdrew to the seclusion of our tent.
sicken for something—be in the early stages of a disease (not yet manifest):
- “I’d rather be at home,” said the cameraman. “I’m definitely sickening for something.”
sicken of something—grow bored or tired of smth.:
- There must come a time in each person’s life, when they sicken of their seemingly purposeless existence.