Where does “умопомешательство” come from?

умопомешательство (Russian) comes from Russian помешательство, from Russian -тельство, 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;...

умопомешательство (Russian): madness, insanity, lunacy

Definitions

  1. madness, insanity, lunacy

Ancestry of “умопомешательство”, step by step

умопомешательство traces back through two separate lines of ancestry.

via Russian помешательство

StepLanguageWordMeaning
1Russianпомешательствоmadness, insanity; obsession, passion
2Russian-тельство-ence, -ance, -tion, -ity, -ment, etc
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;...

via Russian у́м

StepLanguageWordMeaning
1Russianу́мmind
2Old East Slavicумъmind, intellect
3Proto-Slavicumъmind
4Proto-Indo-Europeanh₂ew-m-
5Proto-Indo-Europeanh₂ew-to enjoy; to consume; to perceive, see, to be...
Every word from Proto-Indo-European wisósEvery word from Proto-Indo-Iranian wišásEvery word from Proto-Finnic wiša