Surunpotku by Leena Lehtolainen
I have no idea how to translate the name since it's not really even a word... like, there is a word "onnenpotku" which is used when something really lucky happens, and in this book, some dude came up with a word "surunpotku." The "onnen" part means luck, while "suru" means sadness, and "potku" means a kick, so... eh, still don't know how I'd translate it, but basically, it means something really unlucky happened.
It's a crime novel btw, and the guy who came up with the word got murdered. Still haven't gotten far enough to know who the murderer is.