Where does “แข็งแรง” come from?

แข็งแรง (Thai) comes from Thai แข็ง, from Proto-Southwestern Tai *kʰɛːŋᴬ¹, from Proto-Tai *k.reːŋᴬ.

แข็งแรง (Thai): strong; powerful; solid; healthy

Definitions

  1. strong; powerful; solid; healthy

Ancestry of “แข็งแรง”, step by step

แข็งแรง traces back through two separate lines of ancestry.

via Thai แข็ง

StepLanguageWordMeaning
1Thaiแข็งhard; rigid
2Proto-Southwestern Tai*kʰɛːŋᴬ¹—
3Proto-Tai*k.reːŋᴬ—

via Thai แรง

StepLanguageWordMeaning
1Thaiแรงstrength; power; energy; labor; effort; strong;...
2Proto-Taireːŋᴬstrong; strength
Every word from Proto-Tai *k.reːŋᴬ →Every word from Proto-Southwestern Tai *kʰɛːŋᴬ¹ →Every word from Thai แข็ง →