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Jyutping ngoi4 gwaa1
Pinyin dāi guā

Definitions (CC-CEDICT)
  1. idiot
  2. fool
Definitions (Wiktionary)
  1. noun
    idiot; fool
    (syn.) 愚人, 大戇呆, 戇大豬, 豆渣腦殼, 錘哥, 蠢材, 蠢人, 戆呆, 蠢蛋, 低能兒, 笨货, 戇呆, 老衬, 呆子, 哈卵, 戆人, 戇人, 大番薯, 白痴, 戆大猪, 戆囝, 壋將, 大戇牯, 闇雞, 鵝牯, 老襯, 傻瓜, 笨貨, 戇鳩, 大戆呆, 低能儿, 鹅牯, 人头猪脑, 戇猴, 豆渣脑壳, 傻子, 笨人, 戆猴, 戇囝, 锤哥, 𬮴鸡, 大戆牯, 戆鸠, 戆大呆, 笨蛋, 人頭豬腦, 戇大呆, 垱将
Examples (Tatoeba—Mandarin-English)
  1. Mandarin
    你个呆瓜!
    你個呆瓜!
    nǐ gè dāi guā !
    • You're an idiot.
    • You're an idiot!