Gryffindor: 'Epic' (as in, "whoa!! that was so cool!!!")

Ravenclaw: 'Interesting' (as in, "that's so cool, tell me more!!!)

Hufflepuff: 'Decent/Accepted' (as in, "it's cool/we're cool/they're cool")

Slytherin: 'Impressive' (as in, "they're so cool, I wish I was more like them")