Where does “haprea” come from?

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

Ancestry of “haprea”, step by step

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