Where does “shitbrain” come from?

shitbrain (English) comes from English shit, from Middle Dutch schite, from Old Dutch skīta, from Old Saxon skiti, from Proto-Germanic skītaz, from Proto-Indo-European sḱeyd-, from Proto-Indo-European sḱēy-, from Proto-Germanic skaidą — to cut, part, spearate, divide; to cut, part,...

shitbrain (English): A stupid person

Definitions

  1. A stupid person

Ancestry of “shitbrain”, step by step

shitbrain traces back through two separate lines of ancestry.

via English shit

StepLanguageWordMeaning
1EnglishshitSolid excretory product evacuated from the...
2Middle Dutchschite
3Old Dutchskīta
4Old Saxonskiti
5Proto-Germanicskītaz
6Proto-Indo-Europeansḱeyd-to shade; to cut off; to part with, separate, cut...
7Proto-Indo-Europeansḱēy-to shine; to shimmer; shadow; luster, gloss,...
8Proto-Germanicskaidąseparation, distinction
9Proto-Indo-EuropeanskÁit-to cut, part, spearate, divide; to cut, part,...

via English brain

StepLanguageWordMeaning
1EnglishbrainThe control center of the central nervous system...
2Middle EnglishbraynThe brain or cerebrum; the organ of thought;...
3Old Englishbræġnbrain
4Proto-West Germanic*bragnbrain
5Proto-Germanicbragnąbrain
6Proto-Indo-Europeanmregʰnomskull, brain
7Proto-Indo-Europeanmen-to think, mind; spiritual activity; to stay,...
Every word from Proto-Indo-European skÁit-