unserious

American  

[uhn-seer-ee-uhs] / ˌʌnˈsɪər i əs /

adjective

1. not serious; not earnest, weighty, or grave.

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Example Sentences

Warner Bros. blasted Paramount, saying the David Ellison-led company’s lawsuit was “yet another unserious attempt to distract and the Judge saw right through it.”

From Los Angeles Times

“A merger of Glencore and Rio Tinto that was thought by many as an unserious conversation just over a year ago, has now found its sweet spot after a strong copper rally, heightened resource scarcity fears and an Argentina turnaround,” RBC says in a note.

From The Wall Street Journal

But given their exchanges have involved trading insults including fraud, hypocrite and unserious, we'll have to see how their working relationship evolves.

From BBC

Of course, the suggestion was unserious but it usefully if frontally undressed a reality.

From The Wall Street Journal

A merger that was until recently dismissed as unserious “has now found its sweet spot after a strong copper rally, heightened resource scarcity fears and an Argentina turnaround,” Davis says.

From The Wall Street Journal