Where does “täysijärkinen” come from?

täysijärkinen (Finnish) comes from Finnish täysi, from Proto-Finnic täüci, from Proto-Uralic täwde — full.

täysijärkinen (Finnish): sane, in one's right mind

Definitions

  1. sane, in one's right mind

Ancestry of “täysijärkinen”, step by step

täysijärkinen traces back through two separate lines of ancestry.

via Finnish täysi

StepLanguageWordMeaning
1Finnishtäysifull
2Proto-Finnictäücifull
3Proto-Uralictäwdefull

via Finnish järki

StepLanguageWordMeaning
1Finnishjärkireason; sense
2Proto-Finnicjärkirow; order, condition
Every word from Proto-Uralic täwde →Every word from Proto-Finnic täüci →Every word from Finnish täysi →