Where does “брейнрот” come from?

брейнрот (Bulgarian) comes from English brain rot, from English rot, from Middle English roten, from Middle English rote, from Old French rote, from Latin rupta, from Latin ruptus, from Latin rumpō — to tear out, dig out, open, acquire.

Ancestry of “брейнрот”, step by step

StepLanguageWordMeaning
1Englishbrain rotThe degradation of mental faculties, intelligence, common sense, or moral character
2EnglishrotTo suffer decomposition due to biological action,...
3Middle EnglishrotenTo decompose; to make or become rotten or spoiled
4Middle EnglishroteThe root; The foundation or base of a...
5Old Frenchroteroute, path
6Latinruptanominative feminine singular of ruptus;...
7Latinruptusbroken; ruptured, burst
8Latinrumpōto break, burst, tear, rend, rupture; break asunder, force open
9Proto-Indo-EuropeanHrunéptito be breaking
10Proto-Indo-EuropeanHrewp-to break, tear
11Proto-Indo-EuropeanHrew-to tear out, dig out, open, acquire
Every word from Proto-Indo-European Hrew-