Where does “poofster” come from?

poofster (English) comes from English -ster, from Middle English -estere, from Old English -estre, from Proto-West Germanic *-astrijā — ress.

Ancestry of “poofster”, step by step

StepLanguageWordMeaning
1English-sterSomeone who is, or who is associated with, or who...
2Middle English-esterester, -ress
3Old English-estrefemale agent suffix, especially denoting one who...
4Proto-West Germanic*-astrijāress
Every word from Proto-West Germanic *-astrijā →Every word from English -ster →Every word from Old English -estre →