Where does “nước đục thả câu” come from?

nước đục thả câu (Vietnamese) comes from Vietnamese cầu, from Proto-Vietic kaw, from Dutch kauwen, from Middle Dutch couwen, from Old Dutch kiuwan, from Proto-West Germanic keuwan, from Proto-Germanic kewwaną, from Proto-Indo-European ǵyewh₁- — to chew.

Ancestry of “nước đục thả câu”, step by step

nước đục thả câu traces back through 3 separate lines of ancestry.

via Vietnamese cầu

StepLanguageWordMeaning
1Vietnamesecầua jianzi shuttlecock; a badminton shuttlecock;...
2Proto-Vietickaw—
3Dutchkauwento chew
4Middle Dutchcouwento chew
5Old Dutchkiuwanto chew
6Proto-West Germanickeuwanto chew
7Proto-Germanickewwanąto chew
8Proto-Indo-Europeanǵyewh₁-to chew

via Vietnamese nước đục

StepLanguageWordMeaning
1Vietnamesenước đụcturbid water
2Vietnamesenướcwater; liquid; fluid; the liquid part of a broth
3Proto-Vieticɗaːkwater, liquid
4Proto-Mon-Khmerɗaakwater; liquid; The sense of "river, stream" that...

via Vietnamese thả

StepLanguageWordMeaning
1Vietnamesethảto release; to let go; to set free
2Chinese赦—
Every word from Proto-Indo-European ǵyewh₁- →Every word from Proto-Germanic kewwaną →Every word from Proto-West Germanic keuwan →