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Jyutping mat1 hai1
Pinyin miē sē

Definitions (Wiktionary)
  1. pron, Cantonese, vulgar
    what
Examples (粵典–words.hk)
  1. Cantonese
    做乜閪野呀?
    做乜閪野呀?
    zou6 mat1 hai1 je5 aa3?
    • What are you fucking doing?