うとうと #16,349 Inflections of うとうと Class Suru verb Stem Inflected ending ✕ Link copied! Common うとうと [1] Meaning Shirabe Adverb To-adverb Suru verb Onomatopoeic falling into a doze; dozing off; nodding off 彼かれは一日中いちにちじゅううとうとしていた。 He slumbered out the whole day. Forms うとうと#16,349うとうとウトウト#26,509ウトウト Learn this word with smart reviews that adapt to you Save word