frivolous (suomeksi)

kevytmielinen (a: silly; especially at an inappropriate time or in an inappropriate manner)
pinnallinen (a)
joutava (a)
vähäpätöinen (a)
naurettava (a: silly; especially at an inappropriate time or in an inappropriate manner)
typerä (a: silly; especially at an inappropriate time or in an inappropriate manner)
idioottimainen (a: silly; especially at an inappropriate time or in an inappropriate manner)
hölmö (a: silly; especially at an inappropriate time or in an inappropriate manner)
mitätön (a: of little weight or importance; not worth notice)
jonninjoutava (a: of little weight or importance; not worth notice)