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Jyutping waak6 faa1 hau2 min6
Pinyin huà huā kǒu miàn

Definitions (CC-CANTO)
  1. (metaphor) to spread rumors changing good to bad
Definitions (粵典–words.hk)
  1. 語句、俚語
    散播​對​一個​人​不利​嘅​謠​言​;​抵毀​、​損害​其他人​嘅​形象
    to spread malicious rumors about someone
  2. 參看
    劃花口面