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Jyutping zoi6 so2 bat1 ci4
Pinyin zài suǒ bù cí

Definitions (CC-CEDICT)
  1. not to refuse to (idiom)
  2. not to hesitate to
Examples (粵典–words.hk)
  1. Cantonese
    赴汤蹈火,在所不辞
    赴湯蹈火,在所不辭
    fu6 tong1 dou6 fo2, zoi6 so2 bat1 ci4
    • one will not decline despite hardship