Where does “jäkälätauti” come from?

jäkälätauti (Finnish) comes from Finnish tauti, from Proto-Finnic tauti, from Proto-Norse dauđi.

Ancestry of “jäkälätauti”, step by step

jäkälätauti traces back through two separate lines of ancestry.

via Finnish tauti

StepLanguageWordMeaning
1Finnishtautidisease
2Proto-Finnictautidisease, sickness
3Proto-Norsedauđi—

via Finnish jäkälä

StepLanguageWordMeaning
1Finnishjäkälälichen
2Proto-Finnicjäkälälichen
3Proto-Finno-Permicjäkä-—
Every word from Proto-Norse dauđi →Every word from Proto-Finnic tauti →Every word from Finnish tauti →
jäkälätauti — Etymology, Origin & Word History | Etymology Explorer