I wonder if "chumpy" would be accepted as a word by an online Scrabble game.
I have tried it in the dictionary feature of my Scrabble app (using the Android platform Scrabble) and it rejects "chumpy" as a word.
Darn... a little disappointed, I must say. I bet you can't fool the app into accepting made up words. Though I have no idea what seemingly made up 'qi' or 'za' means (which are accepted), but I use them if I can get a double or triple score.
Edit: I usually play Words with Friends, and not Scrabble through Facebook. Maybe it's different?