Where does “hapera” come from?

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

hapera (Finnish): brittle

Definitions

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

hapera — Etymology, Origin & Word History | Etymology Explorer