Where does “Snapeism” come from?

Snapeism (English) comes from English ism, from English -ism, from Latin -ismus, from Ancient Greek -ισμός, from Ancient Greek -μός, from Proto-Indo-European -mós — Creates action/result nouns from verb stems.

Snapeism (English): A new religious movement, emerging in the mid-2000s in online Harry Potter fandom, centered on the fictional character Severus Snape, with its female adherents professing a spiritual connection or astral marriage to him

Definitions

  1. A new religious movement, emerging in the mid-2000s in online Harry Potter fandom, centered on the fictional character Severus Snape, with its female adherents professing a spiritual connection or astral marriage to him

Ancestry of “Snapeism”, step by step

Snapeism traces back through two separate lines of ancestry.

via English ism

StepLanguageWordMeaning
1EnglishismAn ideology, system of thought, or practice that...
2English-ismUsed to form nouns of action or process or result...
3Latin-ismus-ism
4Ancient Greek-ισμόςForms abstract nouns
5Ancient Greek-μόςForms abstract nouns
6Proto-Indo-European-mósCreates action/result nouns from verb stems

via English Snape

StepLanguageWordMeaning
1EnglishSnapeOS grid ref SE2684
2Middle Englishsnaipento nip, injure, afflict, rebuke, revile,...
3Old Norsesneypato outrage, dishonor, disgrace
4Proto-Germanicsnupaną
Every word from Proto-Indo-European -mós
Snapeism — Etymology, Origin & Word History | Etymology Explorer