Where does “rắn đầu” come from?

rắn đầu (Vietnamese) comes from Vietnamese rắn, from Proto-Vietic m-rəɲʔ, from Proto-Mon-Khmer (d)mrəɲʔ — body louse.

rắn đầu (Vietnamese): stubborn

Definitions

  1. stubborn

Ancestry of “rắn đầu”, step by step

rắn đầu traces back through two separate lines of ancestry.

via Vietnamese rắn

StepLanguageWordMeaning
1Vietnameserắna non-constricting snake, as opposed to a trăn;...
2Proto-Vieticm-rəɲʔbody louse
3Proto-Mon-Khmer(d)mrəɲʔbody louse

via Vietnamese đầu

StepLanguageWordMeaning
1Vietnameseđầuhead; tip; end; beginning; commencement; start
2Middle Chinese頭—
Every word from Proto-Mon-Khmer (d)mrəɲʔ →
rắn đầu — Etymology, Origin & Word History | Etymology Explorer