frivolous

 
Pronunciation: /ˈfrɪv(ə)ləs/

adjective

  • not having any serious purpose or value: frivolous ribbons and lacy frills rules to stop frivolous lawsuits
  • (of a person) carefree and superficial: the frivolous, fun-loving flappers of the twenties

Derivatives

frivolously

adverb

frivolousness

noun

Origin:

late Middle English: from Latin frivolus 'silly, trifling' + -ous