Where does “наблюдательность” come from?

наблюдательность (Russian) comes from Russian наблюда́тельный, from Russian наблюда́тель, 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 — fluidity, slime, poison; poison; poison; slime;...

наблюдательность (Russian): observation (skill), power / keenness of observation

Definitions

  1. observation (skill), power / keenness of observation

Ancestry of “наблюдательность”, step by step

StepLanguageWordMeaning
1Russianнаблюда́тельныйobservation, observational
2Russianнаблюда́тельobserver
3Russian-тель-er
4Proto-Slavic-teľьDeverbative, forms agent nouns from the...
5Proto-Slavic-jьAdjectival inherited from the Caland roots,...
6Proto-Indo-Europeanyósthat, who, which
7Proto-Finnicwiša
8Proto-Indo-Iranianwišáspoison, venom
9Proto-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