1. To pull someone out of ignorance.
2. To reveal life changing facts to someone.
3. To (get someone to) seize doing a repetitive or monotone action in the everyday life.
4. The attempt to convince a 'cog' person or a 'drone' about something they think is impossible, or to show them information they do not yet know.
The point of UFO conferences is to decognify people who don't believe in anything beyond their daily lives.
This is what often needs to be done after a person and their cats have moved out of a place. It is the process of removing all dander and fine fur from a house or apartment, so that people with severe cat allergies can live their without taking a constant supply of allergy medication, and having their asthma triggered.
We really needed to decatify the apartment before moving in. Before we decatified the apartment, even after the professional carpet cleaners and cleaning crew came in, I kept on sneezing and wheezing. When I washed down the walls and rinsed off the wash cloth, loads of fine fur and dander was suspended in the water. Gross!