Where does “rectitude” come from?

rectitude (Middle English) comes from Middle French rectitude, from Latin rectitūdō, from French rectitude, from Late Latin rectitudo, from Latin rēctus, from Latin regō, from Proto-Italic regō, from Proto-Indo-European h₃réǵeti — to straighten, to right oneself; right; just.

Ancestry of “rectitude”, step by step

StepLanguageWordMeaning
1Middle Frenchrectitude
2Latinrectitūdōstraightness, directness
3Frenchrectituderectitude
4Late Latinrectitudostraightness, uprightness; straightness,...
5Latinrēctusled straight along, drawn in a straight line, straight, upright
6Latinregōto rule, govern, direct
7Proto-Italicregō
8Proto-Indo-Europeanh₃réǵetito be straightening, to be setting upright
9Proto-Indo-Europeanh₃reǵ-to straighten, to right oneself; right; just

Words derived from “rectitude

Every word from Proto-Indo-European h₃reǵ-
rectitude — Etymology, Origin & Word History | Etymology Explorer