frivol

verb

1. (intransitive)To behave frivolously.

   ““I will act, dance, ride, frivol, talk scandal, dine out, and appropriate the legitimate captives of any woman I choose, until I d-r-r-rop, or a better woman than I puts me to shame before all Simla, — and it's dust and ashes in my mouth while I'm doing it!””

2. (intransitive)To trifle.

noun

1. An unserious person; a shallow person.
2. An idle diversion or pastime; a frivolity.