Where does “củi lửa” come from?

củi lửa (Vietnamese) comes from Vietnamese lửa, from Proto-Vietic -laːs, from Proto-Mon-Khmer slaas — fire, to burn.

củi lửa (Vietnamese): firewood

Definitions

  1. firewood

Ancestry of “củi lửa”, step by step

củi lửa traces back through two separate lines of ancestry.

via Vietnamese lửa

StepLanguageWordMeaning
1Vietnameselửafire
2Proto-Vietic-laːsfire
3Proto-Mon-Khmerslaasfire, to burn

via Vietnamese củi

StepLanguageWordMeaning
1Vietnamesecủifirewood
2Proto-Vieticguːs—
3Proto-Mon-Khmer( )ʔusfirewood
Every word from Proto-Mon-Khmer slaas →Every word from Proto-Vietic -laːs →Every word from Vietnamese lửa →