Where does “Pikkujämsä” come from?

Pikkujämsä (Finnish) comes from Finnish pikku, from Finnish pieni, from Proto-Finnic peeni — little, small; fine.

Ancestry of “Pikkujämsä”, step by step

Pikkujämsä traces back through two separate lines of ancestry.

via Finnish pikku

StepLanguageWordMeaning
1Finnishpikkulittle, small; little old
2Finnishpienilittle, small; Third-person singular indicative...
3Proto-Finnicpeenilittle, small; fine

via Finnish Jämsä

StepLanguageWordMeaning
1FinnishJämsä
Every word from Proto-Finnic peeni