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Jyutping mut6 si6 ji4
Pinyin méi shì ér

Definitions (HSK3.0)
  1. HSK3 一级词汇表 #235

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Jyutping mut6 si6 ji4
Pinyin méi shì r5

Definitions (CC-CEDICT)
  1. to have spare time
  2. free from work
  3. it's not important
  4. it's nothing
  5. never mind
Examples (Tatoeba—Mandarin-English)
  1. Mandarin
    没事儿。
    沒事兒。
    méi shì er 。
    • No prob.
    • No problem.
    • It's nothing extraordinary.
    • There's not much going on.
  2. Mandarin
    别客气,没事儿。
    別客氣,沒事兒。
    bié kè qi , méi shì er 。
    • You're welcome, it was nothing.