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Jyutping seoi1 dou3 mou5 jan4 jau5
Pinyin shuāi dào mǎo rén yǒu

Definitions (CC-CANTO)
  1. extremely nasty; terrible beyond belief [colloquial]
Examples (Wiktionary)
  1. Cantonese
    衰到冇人有
    衰到冇人有
    seoi1 dou3 mou5 jan4 jau5
    • extremely bad