Meaning of the word unserious in English

What does unserious mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

unserious

US /ʌnˈsɪr.i.əs/
UK /ʌnˈsɪə.ri.əs/

Adjective

not serious; frivolous or playful

Example:
His unserious attitude often got him into trouble at work.
She made an unserious comment that lightened the mood.