frivolous
Definitions
Not having any serious purpose or value.
Carefree and not serious; lacking proper sense or judgment.
Examples
The judge dismissed the lawsuit, calling it a frivolous waste of the court's time.
She spent her entire inheritance on frivolous purchases like designer handbags and luxury vacations.
It is difficult to take his arguments seriously when he insists on making such frivolous comments during important meetings.
Synonyms
flippant superficial trivial silly facetious lightheaded giddy