See also: fach, and Fach German Etymology From Middle High German vach (“-fold”),[1] from Proto-Germanic *faką (“division, interval”). Pronunciation IPA(key): /fax/ Audio:(file) Audio:(file) Suffix -fach -fold Derived terms German terms suffixed with -fach References [1]Friedrich Kluge (1883) “fach”, in John Francis Davis, transl., Etymological Dictionary of the German Language, published 1891 Wikiwand - on Seamless Wikipedia browsing. On steroids.