Where does “hapero” come from?

hapero (Finnish) comes from Finnish hapera, from Finnish haprea, from Finnish hauras, from Proto-Finnic hapras — brittle, fragile, weak.

hapero (Finnish): brittlegill, russula; brittle

Definitions

Step	Language	Word	Meaning
1	Finnish	hapera	brittle
2	Finnish	haprea	—
3	Finnish	hauras	brittle, fragile, frail, friable, crumbly,...
4	Proto-Finnic	hapras	brittle, fragile, weak

hapero — Etymology, Origin & Word History | Etymology Explorer