Where does “shitbrained” come from?

shitbrained (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,...

shitbrained (English): very unintelligent or senseless

Definitions

  1. very unintelligent or senseless

Ancestry of “shitbrained”, step by step

shitbrained 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 brained

StepLanguageWordMeaning
1EnglishbrainedHaving a particular kind or number of brain;...
2EnglishbrainThe control center of the central nervous system...
3Middle EnglishbraynThe brain or cerebrum; the organ of thought;...
4Old Englishbræġnbrain
5Proto-West Germanic*bragnbrain
6Proto-Germanicbragnąbrain
7Proto-Indo-Europeanmregʰnomskull, brain
8Proto-Indo-Europeanmen-to think, mind; spiritual activity; to stay,...
Every word from Proto-Indo-European skÁit-
shitbrained — Etymology, Origin & Word History | Etymology Explorer