Install hunspell-de-ch by entering the following commands in the terminal:
sudo apt update sudo apt install hunspell-de-ch
Description:
Swiss (German) dictionary for hunspell
This is the German (Switzerland, Liechtenstein) dictionary (de-CH-1996) for use with the hunspell spellchecker. . Most notably this variant supports swiss spelling. This includes some Swiss words, as well as ss instead of German sz ligature.
Homepage: https://www.j3e.de/ispell/igerman98/
Version: 20161207-4
Section: text