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Jyutping jan4 ceon2 mou5 joek6 ji1
Pinyin rén chǔn mǎo yào yī

Definitions (粵典–words.hk)
  1. 語句
    一個​人太蠢​,​蠢到​冇​得​改​嘅​地步​;​講​嚟​取笑​嗰​個​人​或者​呻
    there is no cure for stupidity

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Jyutping jan4 ceon2 mou5 joek6 ji1
Pinyin rén chǔn mǎo shuò yī

Definitions (CC-CANTO)
  1. it is used to describe a person who is so stupid that no medicine can cure his/ her stupidity
Examples (Tatoeba—Cantonese-English)
  1. Cantonese
    人蠢冇药医。
    人蠢冇藥醫。
    jan4 ceon2 mou5 joek6 ji1 。
    • There's no cure for stupidity.