Where does “rắn chắc” come from?

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

rắn chắc (Vietnamese): strong and firm

Definitions

  1. strong and firm

Ancestry of “rắn chắc”, step by step

rắn chắc 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 chắc

StepLanguageWordMeaning
1Vietnamesechắcfirm; secure; steady
Every word from Proto-Mon-Khmer (d)mrəɲʔ →Every word from Proto-Vietic m-rəɲʔ →Every word from Vietnamese rắn →
rắn chắc — Etymology, Origin & Word History | Etymology Explorer