'Frivolous' definitions:

Definition of 'frivolous'

From: WordNet
adjective
Not serious in content or attitude or behavior; "a frivolous novel"; "a frivolous remark"; "a frivolous young woman" [ant: serious]

Definition of 'Frivolous'

From: GCIDE
  • Frivolous \Friv"o*lous\, a. [L. frivolus; prob. akin to friare to rub, crumble, E. friable: cf. F. frivole.] [1913 Webster]
  • 1. Of little weight or importance; not worth notice; slight; as, a frivolous argument. --Swift. [1913 Webster]
  • 2. Given to trifling; marked with unbecoming levity; silly; interested especially in trifling matters. [1913 Webster]
  • His personal tastes were low and frivolous. --Macaulay.
  • Syn: Trifling; trivial; slight; petty; worthless. -- {Friv"o*lous*ly}, adv. -- {Friv"o*lous*ness}, n. [1913 Webster]

Synonyms of 'frivolous'

From: Moby Thesaurus