Seriousness is a quality of being calmly intent, or serious. Your seriousness will serve you well when you're studying for an important test.

You might talk about the seriousness of an argument between two friends, or the seriousness of your math teacher when she expects the class to pay attention. Sometimes seriousness implies a bit of worry, like when you ask about the seriousness of your grandmother's health problems. The noun seriousness comes from an adjective, serious, with a Latin root, serius, which means "weighty, important, or grave."

Definitions of seriousness
  1. noun
    an earnest and sincere feeling
    synonyms: earnestness, sincerity
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    type of:
    gravity, solemnity
    a solemn and dignified feeling
  2. noun
    the trait of being serious
    “"a lack of solemnity is not necessarily a lack of seriousness"- Robert Rice”
    synonyms: earnestness, serious-mindedness, sincerity
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    frivolity, frivolousness
    the trait of being frivolous; not serious or sensible
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    commitment, committedness
    the trait of sincere and steadfast fixity of purpose
    graveness, gravity, soberness, sobriety, somberness, sombreness
    a manner that is serious and solemn
    sedateness, solemness, solemnity, staidness
    a trait of dignified seriousness
    the commitment of something other than money (time, energy, or effort) to a project with the expectation of some worthwhile result
    stodginess, stuffiness
    dull and pompous gravity
    type of:
    a distinguishing feature of your personal nature
  3. noun
    alarming importance or seriousness
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    type of:
    the quality of being important and worthy of note
  4. noun
    the quality of arousing fear or distress
    “he learned the seriousness of his illness”
    synonyms: distressfulness
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    type of:
    badness, severeness, severity
    used of the degree of something undesirable e.g. pain or weather
Word Family
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