Where does “quatre-vingts” come from?

quatre-vingts (French) comes from French quatre, from Old French quatre, from Latin quattŭor, from Portuguese quarto, from Old Portuguese quarto, from Latin quārtus, from Proto-Indo-European kʷeturtos, from Proto-Indo-European kʷetwóres — and.

quatre-vingts (French): eighty, 80

Definitions

  1. eighty, 80

Ancestry of “quatre-vingts”, step by step

quatre-vingts traces back through two separate lines of ancestry.

via French quatre

StepLanguageWordMeaning
1Frenchquatrefour
2Old Frenchquatrefour
3Latinquattŭorfour; 4
4Portuguesequartoordinal form of quatro; fourth; quarter; fourth;...
5Old Portuguesequartoquarter
6Latinquārtusfourth
7Proto-Indo-Europeankʷeturtos
8Proto-Indo-Europeankʷetwóresfour
9Proto-Indo-Europeankʷe-and

via French vingt

StepLanguageWordMeaning
1Frenchvingttwenty
2Old Frenchvinttwenty
3Latinvīgintītwenty
4Latinquīnquefive; 5
5Proto-Italickʷenkʷefive
6Proto-Indo-Europeanpénkʷefive

Words derived from “quatre-vingts

Every word from Proto-Indo-European kʷe-Every word from Proto-Indo-European kʷetwóresEvery word from Proto-Indo-European kʷeturtos