Where does “oikeanlaatuinen” come from?

oikeanlaatuinen (Finnish) comes from Finnish laatu, from Russian лад, from Proto-Slavic ladъ — harmony, order.

Ancestry of “oikeanlaatuinen”, step by step

oikeanlaatuinen traces back through two separate lines of ancestry.

via Finnish laatu

StepLanguageWordMeaning
1Finnishlaatuquality; sort, kind
2Russianладharmony, concord; manner, way; mode; fret
3Proto-Slavicladъharmony, order

via Finnish oikea

StepLanguageWordMeaning
1Finnishoikearight; right, correct; appropriate, proper,...
2Proto-Finnicoikedastraight; right, correct
3Proto-Finno-Permicwojketa—
Every word from Proto-Slavic ladъ →Every word from Russian лад →Every word from Finnish laatu →
oikeanlaatuinen — Etymology, Origin & Word History | Etymology Explorer