köken: According to the WNT a secondary adaptation of older kopist based on kopie or kopiëren, modern spelling guides invariably treat it as a derivation from kopie. Note also that English copyist may have influenced the spelling. Equivalent to kopie + -ist.
köken: Etymology tree Latin librarius Proto-Indo-European *-lós Proto-Indo-European *-elós Proto-Italic *-elos Latin -ulus Latin -olus Latin librāriolus From librarius (“of books”) + -olus.