seriousness
Americannoun
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earnest or sincere character or attitude.
The proposal was talked about, but I can't say with how much seriousness it was discussed.
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solemn or somber character or attitude.
Is that why your face is so grim—you're fighting to maintain seriousness and not laugh at the speaker’s name?
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the quality of showing or requiring deep thought or concentration.
The two chefs approach their gourmet cuisine with the pensive seriousness others might bring to a difficult math problem.
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the quality of being important or weighty, or of giving cause for concern.
We need educational tools that convey the seriousness of copyright infringement, as well as its consequences and penalties.
Other Word Forms
Etymology
Origin of seriousness
Explanation
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."
Vocabulary lists containing seriousness
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Although this condition is linked to a wide variety of negative health effects, the public chronically underestimates its seriousness.
From Science Daily ● Aug. 23, 2026
Lindelof’s involvement, along with that of “Supergirl: Woman of Tomorrow” series author Tom King, signals a seriousness of intent amplified by the placing the series’ showrunner stewardship under “True Detective” and “Ozark” producer Chris Mundy.
From Salon ● Aug. 14, 2026
He attributes the fact that no fatalities have been reported in part to the seriousness with which residents and public safety personnel have handled evacuations.
From Los Angeles Times ● Aug. 4, 2026
“They’ll make it like a joke but you can tell there’s some seriousness there.”
From The Wall Street Journal ● Aug. 3, 2026
It was not a fog that one would normally take with any great seriousness but a clear-eyed man could not penetrate it any deeper than fifty yards.
From "The Great Santini" by Pat Conroy
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
