Definition of seriousness in US English:

seriousness

noun

  • The quality or state of being serious.

    ‘we are aware of the seriousness of the situation’
    ‘she replied with deadly seriousness’
    • ‘Victims and campaign groups believe the crime has not been treated with sufficient seriousness.’
    • ‘Despite the seriousness of the problems, surgeons were confident the operation had gone well.’
    • ‘This action marks the change to a new seriousness on both sides of the struggle.’
    • ‘At first the idea seems cold and distant, perhaps robbing death of its seriousness.’
    • ‘Calls are supposed to be dealt with by nurses who assess the seriousness of cases before advising callers what to do.’
    solemnity, solemnness, earnestness, graveness, gravity, gravitas, soberness, sobriety, sombreness, sternness, grimness, dourness, humourlessness
    importance, significance, consequence, momentousness, moment, weightiness, weight
    severity, severeness, gravity, graveness, acuteness, grievousness, extremity, danger, dangerousness, perilousness
    earnestness, sincerity, wholeheartedness, genuineness
    View synonyms

Phrases

  • in all seriousness

    • Very seriously; not as a joke.

      ‘I ask this question in all seriousness’
      • ‘I ask you in all seriousness to reconsider your ruling.’
      • ‘In all seriousness, talking is the new sex.’
      • ‘He believes in all seriousness that within five years he will be able to graft wings on to a human being's body.’
      • ‘In all seriousness, however, he said he always dreamed of becoming a famous artist.’
      • ‘In all seriousness, this is a real problem.’
      • ‘I must ask you, in all seriousness, to stop this business.’
      • ‘Victory, however, was not, in all seriousness, an option.’
      • ‘In all seriousness, he asks a great question.’
      • ‘In all seriousness, I'm loving the other guest bloggers.’
      • ‘I am, in all seriousness, tired of being a grown up.’

Pronunciation

seriousness

/ˈsirēəsnəs//ˈsɪriəsnəs/