Where does “fagidiot” come from?

fagidiot (Norwegian Bokmål) comes from Norwegian Bokmål idiot, from Ancient Greek ἰδιώτης, from Ancient Greek ἴδιος, from Proto-Hellenic *hwédios.

fagidiot (Norwegian Bokmål): fachidiot; someone with encompassing knowledge of a subject, but lacking knowledge outside of their subject, often looking at problems through the lens of their speciality

Definitions

  1. fachidiot; someone with encompassing knowledge of a subject, but lacking knowledge outside of their subject, often looking at problems through the lens of their speciality

Ancestry of “fagidiot”, step by step

fagidiot traces back through two separate lines of ancestry.

via Norwegian Bokmål idiot

StepLanguageWordMeaning
1Norwegian Bokmålidiotan idiot, imbecile, fool
2Ancient Greekἰδιώτηςa private person, one not engaged in public...
3Ancient Greekἴδιοςpertaining to self, that is, one's own; private;...
4Proto-Hellenic*hwédios

via Norwegian Bokmål fag

StepLanguageWordMeaning
1Norwegian Bokmålfaga subject; a profession, trade, discipline
Every word from Proto-Hellenic *hwédiosEvery word from Ancient Greek ἴδιοςEvery word from Ancient Greek ἰδιώτης