Where does “ác miệng” come from?

ác miệng (Vietnamese) comes from Vietnamese ác, from Proto-Vietic ʔaːk, from Proto-Mon-Khmer kʔaak — crow; to caw.

ác miệng (Vietnamese): foul-mouthed; offensive (in speech)

Definitions

  1. foul-mouthed; offensive (in speech)

Ancestry of “ác miệng”, step by step

ác miệng traces back through two separate lines of ancestry.

via Vietnamese ác

StepLanguageWordMeaning
1Vietnameseáccruel; evil; inhumane; merciless; savage; evil
2Proto-Vieticʔaːkcrow
3Proto-Mon-Khmerkʔaakcrow; to caw

via Vietnamese miệng

StepLanguageWordMeaning
1Vietnamesemiệnga mouth; a member of a family
2Proto-Vietic-mɛːŋʔmouth
Every word from Proto-Mon-Khmer kʔaak →Every word from Proto-Vietic ʔaːk →Every word from Vietnamese ác →