UNSERIOUS Synonyms: 28 Similar and Opposite Words

unserious

adjective

Definition of unserious

as in unimportant

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Example Sentences

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Recent Examples of unserious Billions of dollars are flowing into pure research, years ahead of any product, at valuations that would have seemed unserious a decade ago. — Charles Yeomans, Forbes.com, 15 Sep. 2026 The key is to be short and memorable without being unserious. — Zach Helfand, New Yorker, 31 Aug. 2026 The performance was outrageous without ever feeling unserious. — Seth Abramovitch, HollywoodReporter, 26 Aug. 2026 The elastic insult is meant to belittle the target as inauthentic, attention-hungry, unserious, and unmanly. — Erik Forrest Jackson, The Atlantic, 22 Aug. 2026 See All Example Sentences for unserious

Recent Examples of Synonyms for unserious

Adjective

The reason is not indifference; no brand team believes the pharmacy is unimportant.

— Harshit Jain, Forbes.com, 13 Oct. 2026
Wright agrees that the findings shouldn’t be interpreted to mean that omega-3s are unimportant for the brain.

— Mira Miller, Verywell Health, 14 July 2026

Definition of unimportant

Adjective

Many academics see sports as frivolous and corrupting, as a distraction from the higher purpose of moral and intellectual formation—and as the most visible sign of the commercialization and corporatization of the modern university.

— Geraldo L. Cadava, The Atlantic, 19 Sep. 2026
Movies The world of fashion is often thought of as frivolous—more spangles than substance, more commerce than art.

— Richard Brody, New Yorker, 18 Sep. 2026

Definition of frivolous

Adjective

To non-historians, the difference of a few years might seem rather trivial.

— Mike McRae October 15, New Atlas, 16 Oct. 2026
But in Season 4, the balance is off, and the fictional president’s parallels to our real-life war-starting, ally-betraying POTUS only make the former’s plight feel that much more trivial.

— Ben Travers, IndieWire, 15 Oct. 2026

Definition of trivial

Adjective

Holly’s parents rejected the idea that the stakes become insignificant because the athletes are in high school.

— Jackson Thompson OutKick, FOXNews.com, 14 Oct. 2026
While seemingly insignificant, these small changes make for a Rice Krispies treat that’s perfectly pullable, delightfully sweet yet salty, and just a touch more exciting than the classic.

— Jesse Szewczyk, Bon Appetit Magazine, 2 Oct. 2026

Definition of insignificant

Adjective

The feds gave the state a silly 48-hour deadline to agree to change constitutional law, dump common sense and sequester these 20,000 ballots, if they were even returned, to double-check they were cast by valid voters.

— Los Angeles Times, Los Angeles Times, 20 Oct. 2026
Performed by legends Julie Andrews and Dick Van Dyke, the silly song is a tongue-twister for kiddos, and the titular word, which means ‘extraordinarily good, wonderful’ even made its way into some real deal dictionaries.

— Stephanie Ganz Published, Parents, 18 Oct. 2026

Definition of silly

Adjective

In modern nuclear weapons, conventional explosives set off a fission reaction—the splitting of big atoms—whose intensity then ignites a fusion reaction that combines light atoms.

— Sarah Scoles, Scientific American, 20 Oct. 2026
Birkin asked her seatmate why the company didn’t yet make a handbag that was bigger than the Kelly, but smaller and lighter than the Hermès’s Haut à Courroies, which her ex Serge Gainsbourg had carried for years.

— Marisa Meltzer, Vanity Fair, 19 Oct. 2026

Definition of light

Adjective

Comparing households aged 72 and older in 2022 with those aged 75 and older in 2025, Maggiulli calculated a smaller—but still substantial—21% increase.

— Nick Lichtenberg, Fortune, 17 Oct. 2026
The development could help make optical atomic clocks smaller and more suitable for use outside laboratories.

— Neetika Walter, Interesting Engineering, 17 Oct. 2026