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2)
#33,023
きゅ
きゅ
Meaning
    1. no sleep or rest; working day and night
      My father worked hard night and day.
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3)
#37,050
Common
しょ
Meaning
    1. medicine
      sleeplessness; insomnia; wakefulness
      She was relieved from insomnia.
    1. EN Insomnia, also known as sleeplessness, is a sleep disorder where people have trouble sleeping.
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