friv ‧ o ‧ lous /ˈfrɪvələs/ BrE AmE adjective
[ Date: 1400-1500 ; Language: Latin ; Origin: frivolus ]
1 . not serious or sensible, especially in a way that is not suitable for a particular occasion:
The court discourages frivolous law suits.
2 . a frivolous person likes having fun rather than doing serious or sensible things – used to show disapproval OPP serious
—frivolously adverb