1. when someone has trouble accepting things as they are, they may try to act as though that thing is not true. They are denying, in some way, the actuality of something.
When a family dog dies, the parents decide they don’t want to burden their child with the knowledge of this death. So they tell their son that the dog has gone to live on a beautiful farm in the country.
A man loses his job, but feels embarrassed and overwhelmed about it. He continues to get up every morning and pretends to go to work. He doesn’t want his family to know. But of course, he now has no income and it will catch up to him eventually.
You can learn more about the four is-es by reading The Phoenix Lectures.