more serious

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somber, humorless adj.
crucial, weighty adj.

ADJECTIVE

somber, humorless

Synonyms

STRONGEST

deliberate genuine honest severe sincere thoughtful

STRONG

sober

WEAK

austere bound bound and determined businesslike cold sober contemplative deadpan determined downbeat earnest funereal go for broke grave grim intent long-faced meditative no-nonsense pensive pokerfaced reflective resolute resolved sedate set solemn staid steady stern unhumorous unsmiling weighty

Antonyms

STRONGEST

deceptive dishonest false insincere misleading untrustworthy

WEAK

flippant funny happy light minor trivial unimportant unserious

ADJECTIVE

crucial, weighty

Synonyms

STRONGEST

dangerous deep difficult far-reaching grievous important major meaningful severe significant tough urgent

WEAK

arduous fateful fell formidable grave grim hard heavy laborious meaning business menacing momentous no joke no laughing matter of consequence operose out for blood playing hard ball pressing smoking sobering strenuous strictly business threatening ugly unamusing unhumorous worrying

Antonyms

STRONGEST

calm easy facile friendly insignificant little meaningless minor small trivial unimportant worthless

WEAK

flippant funny happy light unserious

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.

See Examples For:

more serious

"In addition to cracks and other damage, chimneys are falling, causing more serious damage," she wrote on X.

From Barron's ● Aug. 18, 2026

Yes, having different schedules from a potential partner can be difficult — especially if you get more serious and want children — but every relationship comes with its challenges.

From MarketWatch ● Aug. 14, 2026

But some health professionals say more serious action is needed.

From Los Angeles Times ● Aug. 12, 2026

After “Trenchtown,” the record shifts gears into the slower and more serious “Burnin’ and Lootin’.”

From The Wall Street Journal ● Aug. 10, 2026

Dad was the funny one in their family, always trying to get her more serious mother to laugh.

From "Ivy Aberdeen’s Letter to the World" by Ashley Herring Blake