Where does “South Vietnamese” come from?

South Vietnamese (English) comes from English ese, from Mexican Spanish ese, from Latin ipse, from Proto-Italic *e(s)peso — himself, herself, itself.

South Vietnamese (English): Of or from South Vietnam

Definitions

  1. Of or from South Vietnam

Ancestry of “South Vietnamese”, step by step

South Vietnamese traces back through two separate lines of ancestry.

via English ese

StepLanguageWordMeaning
1Englishesedude, man
2Mexican SpanisheseThe name of the Latin-script letter S; that;...
3Latinipsehimself, herself, itself, the very, the actual;...
4Proto-Italic*e(s)pesohimself, herself, itself

via English South Vietnam

StepLanguageWordMeaning
1EnglishSouth Vietnam
Every word from Proto-Italic *e(s)pesoEvery word from Latin ipseEvery word from Mexican Spanish ese