One who excitedly agrees to attend a social function; however, the day/night of suddenly has another priority or simply doesn't show.
He was stoked about the party on Monday, but he ended up being a total fader-outer.
by Red_Head July 10, 2008
basically means removing yourself from an awkward social situation, by slowly fading out into the backround... mostly involves leaving the venue all together...
"Michelle is a faderouter when it comes to dudes chatting her up. one minute she's there, then disappears for the night"
by mags81 February 03, 2010