Where does “đầy đủ” come from?

đầy đủ (Vietnamese) comes from Vietnamese đay, from Vietnamese dài, from English die, from Latin die, from Latin dies, from Latin diem, from Proto-Italic djēm, from Proto-Italic *djous — to be bright; sky, heaven.

đầy đủ (Vietnamese): adequate; enough; sufficient; complete; full

Definitions

  1. adequate; enough; sufficient; complete; full

Ancestry of “đầy đủ”, step by step

đầy đủ traces back through two separate lines of ancestry.

via Vietnamese đay

StepLanguageWordMeaning
1Vietnameseđayjute (genus "Corchorus", especially the jute...
2Vietnamesedàilong, lengthy
3EnglishdieTo stop living; to become dead; to undergo death;...
4Latindieablative singular of diēs; day; before the day
5LatindiesA day, "particularly:"
6Latindiemaccusative singular of diēs
7Proto-Italicdjēmaccusative singular of *djous
8Proto-Italic*djous—
9Proto-Indo-Europeandyḗwssky, heaven; sky god
10Proto-Indo-Europeandyéwssky, heaven
11Proto-Indo-Europeandyew-to be bright; sky, heaven

via Vietnamese dù

StepLanguageWordMeaning
1Vietnamesedùumbrella; parachute; even if
2Proto-Vieticjɨh—
Every word from Proto-Indo-European dyew- →Every word from Proto-Indo-European dyéws →Every word from Proto-Indo-European dyḗws →