Where does “nikarainen” come from?

nikarainen (Finnish) comes from Finnish nikara, from Finnish -ra, from Finnish -i, from Proto-Uralic -j — oblique plural.

Ancestry of “nikarainen”, step by step

nikarainen traces back through two separate lines of ancestry.

via Finnish nikara

StepLanguageWordMeaning
1Finnishnikara
2Finnish-raForms nouns or adjectives, mostly from nominal...
3Finnish-iA nominal suffix used in eg. ukko → ukki; Used...
4Proto-Uralic-joblique plural

via Finnish inen

StepLanguageWordMeaning
1Finnishinen
Every word from Proto-Uralic -j