I look back and I realize there's only nineteen, because I was shifting things around to make it sound better and more natural. But here are the words:  acquiesce, lugubrious, chagrin, sublime, philanthropic, pontificate, mundane, ingenuous, subjective, sanguine, charlatan, convivial, recalcitrant, feign, quixotic, volition, nonplus, curmudgeon, and prate. I realize there're not all super rare, but these were the words for the dare.

@ShadowBobcat10, Yeah, they're not all super rare but you did a great job with them. It was smooth, with the rarer words.  
I just realized that the last sentence in your comment rhymes. 

@Lata, Thank you. I tried quite hard to meld them in there, but somehow, whenever I read it, those words still stick out to me. Writers problem. And oh, yeah, that line does rhyme! Happy coincidence.

@ShadowBobcat10, No, it doesn't stick out that much. I didn't even have to use a dictionary to know what those words mean, it just made sense.

@Lata, Great! Glad to know that it actually makes sense. It doesn't sound like I gave too many context clues, right?

@ShadowBobcat10, I don't think so. It fitted well. 

@Lata, Thanks.