Where does “fiendism” come from?

fiendism (English) comes from English fiend, from Middle English fēnd, from Old English fēond, from Proto-Germanic *fijand, from Proto-Germanic fijandz, from Proto-Germanic fijāną, from Proto-Indo-European peh₁- — to hate, hurt.

fiendism (English): Fiendish behaviour

Definitions

  1. Fiendish behaviour

Ancestry of “fiendism”, step by step

fiendism traces back through two separate lines of ancestry.

via English fiend

StepLanguageWordMeaning
1EnglishfiendA devil or demon; a malignant or diabolical...
2Middle EnglishfēndAn enemy, foe or fiend
3Old Englishfēondenemy; adversary, foe, enemy, fiend, devil,...
4Proto-Germanic*fijand
5Proto-Germanicfijandzenemy, fiend
6Proto-Germanicfijānąto hate; to dislike
7Proto-Indo-Europeanpeh₁-to hate, hurt

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
Every word from Proto-Indo-European peh₁-