Where does “qua lại” come from?

qua lại (Vietnamese) comes from Vietnamese lại, from Chinese 賴, from English line, from Middle English line, from Old English līne, from Proto-West Germanic *līnā, from Proto-Germanic līnǭ, from Proto-Germanic līną — flax.

qua lại (Vietnamese): happening between two entities; interacting; reciprocal

Definitions

  1. happening between two entities; interacting; reciprocal

Ancestry of “qua lại”, step by step

qua lại traces back through two separate lines of ancestry.

via Vietnamese lại

StepLanguageWordMeaning
1Vietnameselạiagain; on the other hand, meanwhile; to come
2Chinese
3EnglishlineA path through two or more points (compare ‘segment’); a continuous mark, including as made by a pen; any path, curved or straight
4Middle Englishlinerope, cord; line, rule, ruler, measure; rule,...
5Old Englishlīneline, rope, cord; line, cable, rope, hawser,...
6Proto-West Germanic*līnāline, chord, rope, string
7Proto-Germaniclīnǭthat which is made of flax; line, chord, rope,...
8Proto-Germaniclīnąflax
9Proto-Indo-Europeanlīno-flax

via Vietnamese quả

StepLanguageWordMeaning
1Vietnamesequảpiece of fruit; something round; round, painted...
2Vietnamesequầylow cabinet in a shop or store for displaying...
3Proto-Vietickweː
Every word from Proto-Indo-European līno-Every word from Proto-Germanic līnąEvery word from Proto-Germanic līnǭ