Where does “мозгоёб” come from?

мозгоёб (Russian) comes from Russian мозг, from Proto-Slavic mozgъ, from Proto-Balto-Slavic masgás, from Proto-Indo-European mosgʰós — marrow; brain.

мозгоёб (Russian): a bothersome, captious, nitpicky person; a pain in the arse

Definitions

  1. a bothersome, captious, nitpicky person; a pain in the arse

Ancestry of “мозгоёб”, step by step

мозгоёб traces back through two separate lines of ancestry.

via Russian мозг

StepLanguageWordMeaning
1Russianмозгbrain; marrow; brains
2Proto-Slavicmozgъmarrow, brain
3Proto-Balto-Slavicmasgásmarrow; brain
4Proto-Indo-Europeanmosgʰósmarrow; brain

via Russian ёб

StepLanguageWordMeaning
1Russianёбfuck!; masculine singular past indicative...
Every word from Proto-Indo-European mosgʰós →Every word from Proto-Balto-Slavic masgás →Every word from Proto-Slavic mozgъ →
мозгоёб — Etymology, Origin & Word History | Etymology Explorer