friv·o·lous 
/ˈfrɪvələs/ adjective
/ˈfrɪvələs/ adjective [more frivolous; most frivolous] 1 : not important : not deserving serious attention
▪ She thinks window shopping is a frivolous activity. ▪ a frivolous lawsuit [=a lawsuit about something that is not important] 2 : silly and not serious
▪ a frivolous conversation
▪ She thinks window shopping is a frivolous activity. ▪ a frivolous lawsuit [=a lawsuit about something that is not important]
▪ a frivolous conversation
— friv·o·lous·ly adverb
▪ She was spending money frivolously.
▪ She was spending money frivolously.
— friv·o·lous·ness noun [noncount]
