Word of the day: 'incredulous(ly)'

I was in one of my workshops today and one girl had a pretty badly proofread manuscript (lots of typos and gramatical errors), and while we were critiquing it, another girl said something like, "It seemed like you used too many big words, some of which I don't even think are real words. Like, _________, or ________, or in..credu...lously..."

So, I think the first two were actually made up, but when she said the last one, the whole class was like, "...incredulously is a real word, it's like 'skeptical'." It was pretty amazing.