Where does “nặng nhọc” come from?

nặng nhọc (Vietnamese) comes from Vietnamese nặng, from Proto-Vietic ɗaŋʔ, from Proto-Mon-Khmer p(ɗ)aŋ — dry season.

nặng nhọc (Vietnamese): laborious, toilsome

Definitions

  1. laborious, toilsome

Ancestry of “nặng nhọc”, step by step

nặng nhọc traces back through two separate lines of ancestry.

via Vietnamese nặng

StepLanguageWordMeaning
1Vietnamesenặngheavy; stressing due to containing a lot of...
2Proto-Vieticɗaŋʔ—
3Proto-Mon-Khmerp(ɗ)aŋdry season

via Vietnamese nhọc

StepLanguageWordMeaning
1Vietnamesenhọctired, tiresome
Every word from Proto-Mon-Khmer p(ɗ)aŋ →Every word from Proto-Vietic ɗaŋʔ →Every word from Vietnamese nặng →