behave frivolously举止轻浮
flightily frivolously轻浮地
talk frivolously言不及义;义义理
dance frivolously轻浮地跳着舞
Play With Frivolously玩狎
spend their hard-earned money frivolously挥霍辛苦挣来的钱
"she spends her time frivolously enjoying the easy life of a rich and spoiled girl"