Where does “áo ấm” come from?

áo ấm (Vietnamese) comes from Vietnamese ấm, from Proto-Vietic s-ʔəmʔ, from Proto-Mon-Khmer (s)ʔəm.

áo ấm (Vietnamese): clothes or clothing for keeping warm at winter

Definitions

  1. clothes or clothing for keeping warm at winter

Ancestry of “áo ấm”, step by step

áo ấm traces back through two separate lines of ancestry.

via Vietnamese ấm

StepLanguageWordMeaning
1Vietnameseấmwarm; Short for ấm đầu; pot; kettle
2Proto-Vietics-ʔəmʔlukewarm
3Proto-Mon-Khmer(s)ʔəm—

via Vietnamese áo

StepLanguageWordMeaning
1Vietnameseáoa top; an outfit
2Proto-Vieticʔaːwʔ—
3Proto-Mon-Khmerʔaawʔupper garment
Every word from Proto-Mon-Khmer (s)ʔəm →Every word from Proto-Vietic s-ʔəmʔ →Every word from Vietnamese ấm →
áo ấm — Etymology, Origin & Word History | Etymology Explorer