Where does “kyyjärvinen” come from?

kyyjärvinen (Finnish) comes from Finnish Kyyjärvi, from Finnish kyy, from Proto-Finnic küü, from Proto-Uralic kuŋe — the Moon.

Ancestry of “kyyjärvinen”, step by step

StepLanguageWordMeaning
1FinnishKyyjärvi—
2Finnishkyycommon European viper; viper
3Proto-Finnicküüviper
4Proto-Uralickuŋethe Moon
Every word from Proto-Uralic kuŋe →Every word from Proto-Finnic küü →Every word from Finnish kyy →