1. Léger. Mari frivole.
2. Superficiel. Esprit frivole.
1. Having a curiously intricate quality.
2. Indulging in or influenced by fancy; SYN. notional.
3. Not based on fact; dubious; SYN. imaginary, imagined, notional.
ETYM Latin frivolus; prob. akin to friare to rub, crumble, Eng. friable: cf. French frivole.
Not serious in content or attitude or behavior.