Where does “показательный” come from?

показательный (Russian) comes from Russian показа́тель, from Russian -тель, from Proto-Slavic -teľь, from Proto-Slavic -jь, from Proto-Indo-European yós, from Proto-Finnic wiša, from Proto-Indo-Iranian wišás, from Proto-Indo-European wisós — fluidity, slime, poison; poison; poison; slime;...

показательный (Russian): significant, revealing, indicative;...

Definitions

  1. significant, revealing, indicative;...

Ancestry of “показательный”, step by step

StepLanguageWordMeaning
1Russianпоказа́тельindex, indicator, exponent
2Russian-тель-er
3Proto-Slavic-teľьDeverbative, forms agent nouns from the...
4Proto-Slavic-jьAdjectival inherited from the Caland roots,...
5Proto-Indo-Europeanyósthat, who, which
6Proto-Finnicwiša
7Proto-Indo-Iranianwišáspoison, venom
8Proto-Indo-Europeanwisósfluidity, slime, poison; poison; poison; slime;...
Every word from Proto-Indo-European wisósEvery word from Proto-Indo-Iranian wišásEvery word from Proto-Finnic wiša