Def.: The terrible and painful feeling one gets when fictional characters they like either suffer greatly to some degree or die. (Or suffer greatly and then die.)
Usage: A) Because I partake of the Whedonverse and A Song of Ice and Fire, and also I find it easier to feel feelings about fiction oftentimes, I am used to experiencing crushing fictiongrief. B) The jury is still out on whether it’s better to not know something horrible is coming, and therefore get surprise-smacked in the face with fictiongrief, or to expect and/or predict something horrible is coming, and therefore have time to work oneself into a state of fictiongrief in advance. C) I am deep in the throes of fictiongrief right now.
–your fangirl heroine.