Apparently the idea of sharing his bed with a stranger appalled him.

The idea that George should have had taste almost appalled him.

The idea of having relations in her own shrine appalled her.

The idea of sitting in a concert hall, surrounded by other people, appalled him.

The idea that one person was interchangeable with another suddenly appalled him.

The very idea appalled her, but she steeled herself.

The idea of making such a woman into a docile puppet appalled him.

This idea appalled him, and he was unable to dismiss it from his mind.

The idea of slaughter on such a scale appalled Picard.