Where does “segur” come from?

segur (Middle Welsh) comes from Proto-Brythonic segʉr, from Latin sēcūrus, from Latin sē-, from Latin sex, from Proto-Italic seks, from Proto-Indo-European swéḱs — six.

Ancestry of “segur”, step by step

StepLanguageWordMeaning
1Proto-Brythonicsegʉr—
2Latinsēcūruscareless, negligent
3Latinsē-apart-; aside-; away
4Latinsexsix; 6
5Proto-Italicsekssix
6Proto-Indo-Europeanswéḱssix

Words derived from “segur”

Every word from Proto-Indo-European swéḱs →Every word from Latin sē- →Every word from Proto-Italic seks →