Where does “thói tục” come from?

thói tục (Vietnamese) comes from Vietnamese thối, from Proto-Chamic *ʔadhɛ̃y, from Proto-Malayo-Polynesian daqih, from Proto-Austronesian daqiS — forehead.

thói tục (Vietnamese): a tradition; custom; convention

Definitions

  1. a tradition; custom; convention

Ancestry of “thói tục”, step by step

thói tục traces back through two separate lines of ancestry.

via Vietnamese thối

StepLanguageWordMeaning
1Vietnamesethốirotten; fetid, putrid, stinking, foul-smelling;...
2Proto-Chamic*ʔadhɛ̃yforehead
3Proto-Malayo-Polynesiandaqihforehead
4Proto-AustronesiandaqiSforehead

via Vietnamese tục

StepLanguageWordMeaning
1Vietnamesetụca culturally customary practice; legend;...
2Middle Chinese俗—
3Middle Chinese字letter, symbol, character; character
Every word from Proto-Austronesian daqiS →Every word from Proto-Malayo-Polynesian daqih →Every word from Proto-Chamic *ʔadhɛ̃y →