SERIOUSNESS


Meaning of SERIOUSNESS in English

/ ˈsɪəriəsnəs; NAmE ˈsɪr-/ noun

[ U , sing. ] the state of being serious :

He spoke with a seriousness that was unusual in him.

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IDIOMS

- in all seriousness

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.