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Jyutping m4 suk6 sing3
Pinyin wú shú xìng

Definitions (粵典–words.hk)
  1. 形容詞
    指人​唔​得​成熟​,​唔​識​世故​。
    naïve; unfamiliar with the way the world works.
    • 佢咁大個人都仲係唔熟性嘅。
      佢咁大个人都仲系唔熟性嘅。
      keoi5 gam3 daai6 go3 jan4 dou1 zung6 hai6 m4 suk6 sing3 ge2.
      He is still so naïve for his age.
  2. 近義詞
    大唔透、天真、蒸生瓜
Definitions (Kaifangcidian)
  1. 不懂事
  2. 不會做人 – 不会做人
  3. 不懂規矩 – 不懂规矩
  4. 不懂人情世故

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Jyutping m4 suk6 sing3
Pinyin n2 shú xìng

Definitions (CC-CANTO)
  1. describes a person who doesn't know how to deal with people in a proper manner; to not understand the ways of the world
Examples (粵典–words.hk)
  1. Cantonese
    佢咁大个人都仲系唔熟性嘅。
    佢咁大個人都仲係唔熟性嘅。
    keoi5 gam3 daai6 go3 jan4 dou1 zung6 hai6 m4 suk6 sing3 ge2.
    • He is still so naïve for his age.