Where does “cả tin” come from?

cả tin (Vietnamese) comes from Vietnamese cá, from French quart, from Latin quārtus, from Proto-Indo-European kʷeturtos, from Proto-Indo-European kʷetwóres, from Proto-Indo-European kʷe- — and.

cả tin (Vietnamese): gullible

Definitions

  1. gullible

Ancestry of “cả tin”, step by step

cả tin traces back through two separate lines of ancestry.

via Vietnamese cá

StepLanguageWordMeaning
1Vietnamesecáfish; to bet
2Frenchquartfourth; quarter; shift
3Latinquārtusfourth
4Proto-Indo-Europeankʷeturtos—
5Proto-Indo-Europeankʷetwóresfour
6Proto-Indo-Europeankʷe-and

via Vietnamese tín

StepLanguageWordMeaning
1Vietnamesetíntrust; honesty
2Chinese信—
Every word from Proto-Indo-European kʷe- →Every word from Proto-Indo-European kʷetwóres →Every word from Proto-Indo-European kʷeturtos →