The spelling of "Fashing" can be traced back to the German carnival season known as "Fasching". In English, the word is often misspelled as "Fashing" which can be confusing for those unfamiliar with the term. The correct pronunciation is /fæʃɪŋ/ with stress on the first syllable. The "sh" sound is represented by the letters "sch" in German, hence the misspelling. It's important to note that the correct spelling is "Fasching" in German, and "Fasnacht" in Swiss German.
The word "Fashing" is derived from the Middle High German word "vastschanc" or "vastschant", which referred to the period of Carnival or Shrovetide. Over time, through various linguistic changes and influences, the word evolved in German to "Fastnacht", while in some dialects and regions, it became known as "Fasching". "Fashing" is the Anglicized version of the German word, commonly used to refer to the pre-Lenten carnival season celebrated in parts of Germany, Austria, and Switzerland.