Morphology of Finnish language has of course been studied, and spell checkers for it exist. E.g. open-source: https://voikko.puimula.org/ https://voikko.puimul

Morphology of Finnish language has of course been studied, and spell checkers for it exist. E.g. open-source: https://voikko.puimula.org/ https://voikko.puimula.org/ (and its online version https://oikofix.com/contact?lang=en https://oikofix.com/contact?lang=en, where you can also play with the analysis/parsing capabilities) Of course, the more complicated morphology makes it less straightforward than English where simple word list based approaches are sufficient.