Where does “rigorous” come from?

Rigorous comes from Latin rigorosus, derived from Latin rigor with the suffix Latin -or, ultimately from Proto-Indo-European reyǵ- combined with Proto-Indo-European -ōs and -os suffixes.

rigorous (English): Showing, causing, or favoring rigour;...

Definitions

  1. Showing, causing, or favoring rigour;...

Ancestry of “rigorous”, step by step

StepLanguageWordMeaning
1EnglishNessAn Ulster princess and the mother of Conchobar mac Nessa and Findchoem in the Ulster Cycle of Irish mythology. Daughter of Eochaid Sálbuide. Also the mother of Cormac Cond Longas by incest with Conchobar mac Nessa
2Middle Englishnesse
3Old Englishnæsnot, not at all; not; first/third-person singular...
4Proto-Germanicnasjąfoothill; headland; cape
5Proto-Indo-Europeannéh₂snose

Words derived from “rigorous

Every word from Proto-Indo-European néh₂s