Where does “koiperhonen” come from?

koiperhonen (Finnish) comes from Finnish perhonen, from Finnish -nen, from Finnish -inen, from Finnish -uus, from Proto-Finnic -uc — -ness, -hood.

Ancestry of “koiperhonen”, step by step

koiperhonen traces back through two separate lines of ancestry.

via Finnish perhonen

StepLanguageWordMeaning
1Finnishperhoneninsect of the order Lepidoptera; butterfly, moth...
2Finnish-nenForms diminutives nouns or terms expressing...
3Finnish-inen-like, -ous, -y; -en; Creates adjectives from...
4Finnish-uusForms nouns from adjectives, expressing a quality
5Proto-Finnic-uc-ness, -hood

via Finnish koi

StepLanguageWordMeaning
1Finnishkoishort form of vaatekoi Tineola bisselliella,...
2Japanesecarp, specifically, the common carp
3Old Japaneseこい
Every word from Proto-Finnic -ucEvery word from Finnish -inenEvery word from Finnish -uus