Where does “mặt dày mày dạn” come from?

mặt dày mày dạn (Vietnamese) comes from Vietnamese máy, from Proto-Vietic miː, from Proto-Mon-Khmer miiʔ.

mặt dày mày dạn (Vietnamese): shameless; barefaced

Definitions

  1. shameless; barefaced

Ancestry of “mặt dày mày dạn”, step by step

mặt dày mày dạn traces back through 3 separate lines of ancestry.

via Vietnamese máy

StepLanguageWordMeaning
1Vietnamesemáymachine; engine; internal combustion engine
2Proto-Vieticmiː—
3Proto-Mon-Khmermiiʔ—

via Vietnamese mặt dày

StepLanguageWordMeaning
1Vietnamesemặt dàyshameless
2Vietnamesedàythick, deep, dense
3Proto-Vietick-daj—

via Proto-Indo-European dan-

StepLanguageWordMeaning
1Proto-Indo-Europeandan-—
Every word from Proto-Mon-Khmer miiʔ →Every word from Proto-Vietic miː →Every word from Vietnamese máy →