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Jyutping zou1 nau2
Pinyin zāo xiǔ

Definitions (Wiktionary)
  1. verb, literary
    to rot; to decay
    (syn.) 朽爛, 腐烂, 臭爛, 腐敗, 臭烂, 腐败, 腐朽, 朽壞, 腐爛, 糟, 朽敗, 朽腐, 朽弊, 朽坏, 朽烂, 坏, 壞, 朽败