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.
Some are weighing Becerra, Tom Steyer, or Katie Porter largely on perceived policy experience and seriousness, while others are so disenchanted they are opting not to vote at all.
From Los Angeles Times • May 17, 2026
While Latifi leaves readers to make their own conclusions about the ethics of family vlogging, she takes a hard stance on the seriousness of her subject: “It’s not silly, and it is work.”
From Salon • May 10, 2026
That disappointment was shared internally, and it underpinned the seriousness with which everyone engaged in this process.
From BBC • May 5, 2026
The world would have taken notice of his seriousness.
From The Wall Street Journal • May 5, 2026
“I am addressing you for the purpose of reemphasizing the seriousness of the situation this nation faces.”
From "Fallout: Spies, Superbombs, and the Ultimate Cold War Showdown" by Steve Sheinkin
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.
