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Jyutping waai6 baau1
Pinyin huài bāo

Definitions (Wiktionary)
  1. noun, Mandarin, dialectal
    rascal, rogue
    (syn.) 壞蛋, 坏蛋
Examples (粵典–words.hk)
  1. Cantonese
    有坏包换
    有壞包換
    jau5 waai6 baau1 wun6
    • guarantee to exchange if broken