Where does “sexte” come from?

sexte (Old French) comes from Latin Sextus, from Latin sex, from Proto-Italic seks, from Proto-Indo-European swéḱs — six.

Ancestry of “sexte”, step by step

StepLanguageWordMeaning
1LatinSextusparticularly popular in Gaul. (Occasionally also found as a cognomen.) In particular
2Latinsexsix; 6
3Proto-Italicsekssix
4Proto-Indo-Europeanswéḱssix

Words derived from “sexte

Every word from Proto-Indo-European swéḱsEvery word from Proto-Italic seksEvery word from Latin sex