frivolous
friv-o-lous / frĭv-ə-ləs
adjective 1. not serious; silly; foolish One who is serious all day will never have a good time, while one who is frivolous all day will never establish a household. Ptahhotpe, c. 25th - 24th century B.C. 2. of little weight or importance; trivial It is an endless and frivolous pursuit to act by any other rule than the care of satisfying our own minds in what we do. Richard Steele, 1672 - 1729