Where does “fultjack” come from?

fultjack (Swedish) comes from Swedish ful, from Old Norse fúll, from Proto-Germanic fūlaz, from Proto-Indo-European pū- — rotten, putrid; be rotten; putrid; to rot, swell,...

fultjack (Swedish): low-quality (heavily diluted or impure) amphetamine (as a recreational drug)

Definitions

  1. low-quality (heavily diluted or impure) amphetamine (as a recreational drug)

Ancestry of “fultjack”, step by step

fultjack traces back through two separate lines of ancestry.

via Swedish ful

StepLanguageWordMeaning
1Swedishfulugly; of displeasing appearance; dirty, bad;...
2Old Norsefúllfoul
3Proto-Germanicfūlazfoul, dirty; rotten
4Proto-Indo-Europeanpū-rotten, putrid; be rotten; putrid; to rot, swell,...

via Swedish tjack

StepLanguageWordMeaning
1Swedishtjackspeed amphetamine
Every word from Proto-Indo-European pū-Every word from Proto-Germanic fūlazEvery word from Old Norse fúll