Dehallucinating

1. To not see something that is actually there.

2. The mirror or polar opposite to a hallucination. Although quite similar.

3. To be so abstinent from all substances that you actually start to hallucinate.

Kim: You weren't in class the other day, where were you?

Dylan: Excuse me? I was sitting next to you the entire time, You even forced me to borrow your pencil like you always do. You really need to stop dehallucinating