To prove that a Fail or Epic-Fail was actually a win.
Bob:*throws basket-ball and misses hoop*
Bob: " It hit that hobo right in the face unfail "
guy1:"i woke up with my mom in my bed this morning. I fail at life"
guy2: "that was my mom"
1. To make a miraculous turn-around when failure was iminent.
2. To recover from or make up for a past failure.
Tom really unfailed that whole deal with Christine, huh?
the act of not failing
"The party was an epic unfailure." - When said party did not fail.
"Unfail." - When something turns out as planned.