I think I would end up banning a misused word like incredible or awful, or maybe even an overused one like awesome. I feel as though some words have lost their power and because we use them so much they are now common which in all honesty is really sad. There are some fun words I wish we used more, one of my favorites being defenestration, which means to throw someone out the window, if used in a kind way, I personally think our culture could have a lot of fun with this word.