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Jyutping bat1 min4 bat1 jau1
Pinyin bù mián bù xiū

Definitions (CC-CEDICT)
  1. without stopping to sleep or have a rest (idiom)
Definitions (粵典–words.hk)
  1. 副詞
    唔​休息​、​唔​瞓​覺​,​無間​斷​又​好​畀​心機​噉​做​一樣​嘢
    devoting oneself to doing something nonstop without any rest or sleep
    • 佢已經不眠不休噉做咗兩日。
      佢已经不眠不休噉做咗两日。
      keoi5 ji5 ging1 bat1 min4 bat1 jau1 gam2 zou6 zo2 loeng5 jat6.
      He hasn't taken any rest for two days already.
Definitions (Wiktionary)
  1. phrase, idiomatic
    to toil without taking a break to rest or sleep
Examples (粵典–words.hk)
  1. Cantonese
    不眠不休
    不眠不休
    bat1 min4 bat1 jau1
    • to do something without sleep or rest
  2. Cantonese
    佢已经不眠不休噉做咗两日。
    佢已經不眠不休噉做咗兩日。
    keoi5 ji5 ging1 bat1 min4 bat1 jau1 gam2 zou6 zo2 loeng5 jat6.
    • He hasn't taken any rest for two days already.