Where does “irregular” come from?

irregular (Portuguese) comes from Late Latin irregularis, from Latin regularis, from Latin regula, from Latin rego, from Proto-Italic regō, from Proto-Indo-European h₃réǵeti, from Proto-Indo-European h₃reǵ- — to straighten, to right oneself; right; just.

irregular (Portuguese): irregular; nonstandard; irregular

Definitions

  1. irregular; nonstandard; irregular

Ancestry of “irregular”, step by step

StepLanguageWordMeaning
1Late Latinirregularisirregular, unusual
2Latinregularisductile; containing rules; regular
3Latinregularule, bar; second-person singular present active...
4LatinregoI rule, govern; I guide, steer; I oversee, manage
5Proto-Italicregō
6Proto-Indo-Europeanh₃réǵetito be straightening, to be setting upright
7Proto-Indo-Europeanh₃reǵ-to straighten, to right oneself; right; just

Words derived from “irregular

Every word from Proto-Indo-European h₃reǵ-Every word from Proto-Indo-European h₃réǵetiEvery word from Proto-Italic regō