Deadness is the feeling of ness when you are dead.
The feeling of ness cannot be comprehended because you do not know when you feel it, and it is too confusing to comprehend for the average mind.
Deadness is also the feeling you get when you want to suicide. There is a story about deadness.
One day the boy felt deadness. "I WANT TO KEEEL MY SELF!" he said. So he jumped off a cliff, but he didn't die because there was no cliff, and he was dreaming about deadness.
In other words, when you get shot, you feel deadingness.