seriousness noun - Definition, pictures, pronunciation and usage notes | Oxford Advanced American Dictionary at OxfordLearnersDictionaries.com

Definition of seriousness noun from the Oxford Advanced American Dictionary

seriousness

noun

NAmE//ˈsɪriəsnəs//

[uncountable, singular]

the state of being serious He spoke with a seriousness that was unusual in him. We saw from the seriousness of her expression that she meant it.

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Idioms

in all seriousness

very seriously; not as a joke He told us in all seriousness that he was going to join a circus.

See seriousness in the Oxford Advanced Learner's Dictionary

Check pronunciation: seriousness