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Jyutping bat1 daa2 gan2
Pinyin bù dǎ jǐn

Definitions (CC-CEDICT)
  1. unimportant
  2. not serious
  3. it doesn't matter
  4. never mind
Definitions (粵典–words.hk)
  1. 語句、台灣、大陸
    即​係​唔​打緊​、​唔​緊要
    never mind