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Jyutping kau3 mou2 zi2
Pinyin kòu mào zi

Definitions (CC-CEDICT)
  1. to tag sb with unfair label
  2. power word
Definitions (Wiktionary)
  1. verb, verb-object
    to tag someone with an (unfair) label
  2. verb, verb-object
    to poison the well
Examples (Wiktionary)
  1. Mandarin
    扣帽子
    扣帽子
    kòu mào zi
    • to pin a label on someone