Where does “rigour” come from?

Rigour comes from Middle English rigour, from Old French rigor, from Latin rigor, derived from the Proto-Indo-European root reyǵ- with the suffix -or.

rigour (English): Severity or strictness; Harshness, as of climate;...

Definitions

  1. Severity or strictness; Harshness, as of climate;...

Ancestry of “rigour”, step by step

StepLanguageWordMeaning
1Middle Englishrigour
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;...

Words derived from “rigour

Every word from Proto-Indo-European -osEvery word from Latin -orEvery word from Latin rigor