Where does “kuparivihtrilli” come from?

kuparivihtrilli (Finnish) comes from Finnish kupari, from Old Swedish koppar.

Ancestry of “kuparivihtrilli”, step by step

kuparivihtrilli traces back through two separate lines of ancestry.

via Finnish kupari

Step	Language	Word	Meaning
1	Finnish	kupari	copper
2	Old Swedish	koppar	—

via Finnish vihtrilli

Step	Language	Word	Meaning
1	Finnish	vihtrilli	vitriol
2	Swedish	viktril	—

Every word from Old Swedish koppar →Every word from Finnish kupari →