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Jyutping dei6 dei6 dou6 dou6
Pinyin dì dì dào dào

Definitions (CC-CEDICT)
  1. thoroughgoing
  2. authentic
  3. 100%
  4. to the core
Definitions (Wiktionary)
  1. adj, emphatic
    out-and-out; utter; absolute; true-blue