unserious

adjective

un·​se·​ri·​ous ˌən-ˈsir-ē-əs 

: not serious

unserious writers

unserious debates

… recognize the difference between serious and unserious warnings.

—Meg Greenfield

unseriously adverb

talking unseriously

unseriousness noun

Examples of unserious in a Sentence

Recent Examples on the Web

Cook and Harle’s vision of seriously unserious fun was indicted as cheap irony for years. — Billie Bugara, Pitchfork, 27 July 2026

Outside of Silicon Valley, there is a tendency to dismiss such prophecies as, at best, patently unserious. — Gideon Lewis-Kraus, New Yorker, 25 July 2026

Even the final, despite featuring six goals, felt a bit loose, a bit unserious, almost like a pre-season friendly. — Michael Cox, New York Times, 23 July 2026

The episode is replete with racist tropes and stereotypes, made all the worse by the fact that it's all presented as an unserious Halloween treat. — Ryan Coleman, Entertainment Weekly, 3 July 2026

Word History

First Known Use

1655, in the meaning defined above

Rhymes for unserious

• aquarius
• cinereous
• gregarious
• hilarious
• malarious
• nefarious
• precarious
• vicarious
• carious
• scarious
• various
• multifarious