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Jyutping duk6 daai6
Pinyin dú dà

Definitions (Wiktionary)
  1. adj
    predominating; supreme; hegemonic; one and only

獨大 [独-]

Jyutping
Pinyin dú dà

Definitions (CC-CEDICT)
  1. to dominate over all others
  2. to wield all the power
  3. to reign supreme