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Jyutping aa3 sang1
Pinyin ā shēng

Definitions (Wiktionary)
  1. noun, Cantonese
    mister (form of address for a male stranger)

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Jyutping aa3 seng1
Pinyin ā shēng

Definitions (粵典–words.hk)
  1. 名詞
    對​唔​認​識​嘅​男性​使用​嘅​稱​呼
    "Mister", a way to address a male stranger
    • 喂阿生,你好似未俾錢喎。
      喂阿生,你好似未俾钱㖞。
      wai3 aa3 saang1, nei5 hou2 ci5 mei6 bei2 cin2 wo3.
      Hey Mister, I think you haven't paid yet.
  2. 近義詞
    先生

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Jyutping aa3 saang1
Pinyin ā shēng

Definitions (CC-CANTO)
  1. Mister [colloquial]
Definitions (粵典–words.hk)
  1. 名詞
    對​唔​認​識​嘅​男性​使用​嘅​稱​呼
    "Mister", a way to address a male stranger
    • 喂阿生,你好似未俾錢喎。
      喂阿生,你好似未俾钱㖞。
      wai3 aa3 saang1, nei5 hou2 ci5 mei6 bei2 cin2 wo3.
      Hey Mister, I think you haven't paid yet.
  2. 近義詞
    先生
Examples (粵典–words.hk)
  1. Cantonese
    阿生,呢度唔食得烟㗎!
    阿生,呢度唔食得煙㗎!
    aa3 saang1, ni1 dou6 m4 sik6 dak1 jin1 gaa3!
    • Sir, you can't smoke here!
  2. Cantonese
    喂阿生,你好似未俾钱㖞。
    喂阿生,你好似未俾錢喎。
    wai3 aa3 saang1, nei5 hou2 ci5 mei6 bei2 cin2 wo3.
    • Hey Mister, I think you haven't paid yet.
  3. Cantonese
    阿生嚟紧同朋友去旅行庆祝牛一。
    阿生嚟緊同朋友去旅行慶祝牛一。
    aa3 sang1 lai4 gan2 tung4 pang4 jau5 heoi3 leoi5 hang4 hing3 zuk1 ngau4 jat1.
    • Sang's going to travel with his friends to celebrate his birthday.