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Jyutping ngong6 gau1 zai2
Pinyin gàng jiū zǎi

Definitions (粵典–words.hk)
  1. 名詞、粗俗
    戇​鳩​而​通常​年​輕​嘅​人​(​量​詞​:​個​/​條​)
    a fool or an idiot, who is usually young
  2. 參看
    on9仔

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Jyutping ngong6 gau1 zai2
Pinyin zhuàng jiū zǐ

Definitions (CC-CANTO)
  1. noun; swearing word, similar in meaning as idiot or stupid
Examples (粵典–words.hk)
  1. Cantonese
    你唔好当正自己系人哋条仔至得𠿪,人哋当你系观音兵咋戆鸠仔。
    你唔好當正自己係人哋條仔至得𠿪,人哋當你係觀音兵咋戇鳩仔。
    nei5 m4 hou2 dong3 zing3 zi6 gei2 hai6 jan4 dei6 tiu4 zai2 zi3 dak1 gaa2, jan4 dei6 dong3 nei5 hai6 gun1 jam1 bing1 zaa3 ngong6 gau1 zai2.
    • Don't you think you're her boyfriend. You are just a friendzoned admirer subservient to her, you idiot.
  2. Cantonese
    你唔好当正自己系人哋条仔至得𠿪,人哋当你系兵咋戆鸠仔。
    你唔好當正自己係人哋條仔至得𠿪,人哋當你係兵咋戇鳩仔。
    nei5 m4 hou2 dong3 zing3 zi6 gei2 hai6 jan4 dei6 tiu4 zai2 zi3 dak1 gaa2, jan4 dei6 dong3 nei5 hai6 bing1 zaa3 ngong6 gau1 zai2
    • Don't you think you're her boyfriend. You are just a "gun jam bing" to her, you idiot.