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Jyutping lou1 zai2
Pinyin lāo zǎi

Definitions (Kaifangcidian)
  1. 流氓

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Jyutping lou4 zai2
Pinyin lāo zǎi

Definitions (Wiktionary)
  1. noun, Cantonese, derogatory
    young man or boy from northern China

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Jyutping laau1 zai2
Pinyin lāo zǎi

Definitions (粵典–words.hk)
  1. 名詞、大陸
    廣東人​對華北​年青​男性​嘅​貶​稱​;​由來​睇​撈​鬆
    derogatory address by Cantonese to young men from Northern China; see 撈鬆laau1 sung1 for the origin
Definitions (Kaifangcidian)
  1. 外省來的男孩子 – 外省来的男孩子

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Jyutping laau1 zai2
Pinyin lāo zǐ

Definitions (CC-CANTO)
  1. guys from other regions, Cantonese people sometimes use this to refer to guys who migrated from the North