'Frivolousness' definitions:

Definition of 'frivolousness'

From: WordNet
noun
The trait of being frivolous; not serious or sensible [syn: frivolity, frivolousness] [ant: earnestness, serious-mindedness, seriousness, sincerity]

Definition of 'Frivolousness'

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]