Corrinitis 

In fan fiction the killing of favourite, i.e. main/canon, characters with no forewarning.

Named for Gone with the Wind fanfiction author Cornorama.

After two years of writing and posting, without any foreshadowing, the author pulled a Corrinitis and killed one of the main characters in the final chapter.

Corrinitis by viv4ever April 11, 2009

corrination 

How idiots misspell coronation.

You Repugnicants want to give Drumf a corrination as a Kang or an Imperor or sumthin!

corrination by GEOTUS Shock Trooper February 3, 2020

coronitis 

feelings of extreme boredom from being locked-in due to the Coronavirus

"The kids are complaining and I can't think of another project activity for them to do at home. They all seem to have contracted coronitis.

coronitis by E 🐶 dog March 23, 2020