Where does “rigorism” come from?

rigorism (English) comes from English rigor, from Old French rigor, from Latin rigor, from Latin -or, from Proto-Italic -ōs, from Proto-Indo-European -ōs, from Proto-Indo-European -oss, from Proto-Indo-European -os — Creates action nouns or result nouns from verbs;...

rigorism (English): strictness; In Roman Catholic moral theology, the...

Definitions

  1. strictness; In Roman Catholic moral theology, the...

Ancestry of “rigorism”, step by step

rigorism traces back through 3 separate lines of ancestry.

via English rigor

StepLanguageWordMeaning
1EnglishrigorUS spelling of rigour; Short for rigor mortis
2Old Frenchrigorharshness; severity; stiffness; rigidity
3Latinrigorstiffness, rigidity; rigor, cold, harshness,...
4Latin-orused to form a third-declension masculine...
5Proto-Italic-ōsCreates masculine action nouns or result nouns...
6Proto-Indo-European-ōsCreates masculine and feminine action nouns or...
7Proto-Indo-European-oss
8Proto-Indo-European-osCreates action nouns or result nouns from verbs;...

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 French rigorisme

StepLanguageWordMeaning
1Frenchrigorismerigorism
Every word from Proto-Indo-European -osEvery word from Latin -orEvery word from Latin rigor
rigorism — Etymology, Origin & Word History | Etymology Explorer