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Jyutping mou4 cing4 baak6 si6
Pinyin wú qíng bái shì

Definitions (CC-CANTO)
  1. for no apparent reason
Definitions (粵典–words.hk)
  1. 副詞
    冇​理由​、​突然​噉​做​一​啲​嘢
    to do something unexpected for no good reason
    • 你無情白事做咩打人啫?
      你无情白事做咩打人啫?
      nei5 mou4 cing4 baak6 si6 zou6 me1 daa2 jan4 zek1?
      Why did you hit someone for no good reason?
  2. 近義詞
    無啦啦、無情情、無端白事、無端端
Definitions (Kaifangcidian)
  1. 無緣無故 – 无缘无故
  2. 平白無故 – 平白无故
  3. 沒有來有 – 没有来有
  4. 無端 – 无端
Examples (粵典–words.hk)
  1. Cantonese
    你无情白事做咩打人啫?
    你無情白事做咩打人啫?
    nei5 mou4 cing4 baak6 si6 zou6 me1 daa2 jan4 zek1?
    • Why did you hit someone for no good reason?