Where does “harebrain” come from?

harebrain (English) comes from English brain, from Middle English brayn, from Old English bræġn, from Proto-West Germanic *bragn, from Proto-Germanic bragną, from Proto-Indo-European mregʰnom, from Proto-Indo-European men- — to think, mind; spiritual activity; to stay,...

harebrain (English): A person who lacks good sense; one who is foolish and reckless

Definitions

  1. A person who lacks good sense; one who is foolish and reckless

Ancestry of “harebrain”, step by step

harebrain traces back through two separate lines of ancestry.

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,...

via English Hare

StepLanguageWordMeaning
1EnglishHareOS grid ref ST2915
2Frankishhariōnto ruin, lay waste, ravage, plunder, destroy
3Proto-Germanicharjōnąto overrun with an army; lay waste; ravage;...
4Proto-Indo-Europeankóryoswar; troops; army; war, troops
5Proto-Indo-Europeanḱer-to grow, to make grow, to nourish; to plait,...
6Proto-Indo-Europeankr̥-to turn, to bend
7Proto-Indo-Europeanker-army
Every word from Proto-Indo-European men-Every word from Proto-Indo-European mregʰnomEvery word from Proto-Germanic bragną
harebrain — Etymology, Origin & Word History | Etymology Explorer