Where does “pikkuneiti” come from?

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

Ancestry of “pikkuneiti”, step by step

pikkuneiti 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 neiti

StepLanguageWordMeaning
1Finnishneitimiss
2Proto-Finnicneitigirl, young woman
3Proto-Uralicnejdegirl
Every word from Proto-Finnic peeni