Entry
  1. Adverb (fukushi)

    soundly (of sleeping); (sleeping) like a log

    Onomatopoeic or mimetic word

    「おはよう。今日は早いね」「アナタこそ、まだぐうすか寝てると思ってたのに」
    "Morning. You're early today." "You too. I thought you'd still be dead to the world."

Also written ぐーすかぐうすか

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