frivolous
(friv-o-lous)
3 syllables
Definition
adjective. characterized by lack of seriousness or sense; selfindulgently carefree; unconcerned about or lacking any serious purpose
Example Sentence
Do not splurge on frivolous things.
Synonyms
empty-headed; scatterbrained; flighty
Antonyms
sensible; serious; solemn; thoughtful; wise