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Jyutping dai2 ding6
Pinyin dǐ dìng

Definitions (Wiktionary)
  1. verb, literary
    to pacify; to bring peace to

底定 [--]

Jyutping
Pinyin dǐ dìng

Definitions (CC-CEDICT)
  1. (literary) to quell an insurgency
  2. (Tw) to settle (a matter)