EntryCommon
  1. Adverb (fukushi), Adverb taking the 'to' particle, Suru verb

    falling into a doze; dozing off; nodding off

    Onomatopoeic or mimetic word

    彼は一日中うとうとしていた。
    He slumbered out the whole day.

Also written ウトウトうとっとウトッとウトっと

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