killjoy

What kind of abominable killjoy would be against loving presents and cookies?

Not to be a killjoy fact-checker, but this does seem like an important detail to get right.

I dont want to be shown up as a fraid cat and a killjoy, cried Jessie.

However, I did my utmost to bear a cheerful and contented mien, for killjoy is but a poor friend.

I'm not going to offer it to you again, nor anything else either, you great hulking killjoy.

A man who was a well known killjoy was described as a great athlete.

He knows that I scorn his, and he comes to insinuate himself into mine, the horrible killjoy!