Synonyms of frivolous

Adjective

1. frivolous (vs. serious), airheaded, dizzy, empty-headed, featherbrained, giddy, light-headed, lightheaded, silly, flighty, flyaway, head-in-the-clouds, scatterbrained, flippant, light-minded, idle, light, light, trivial, superficial

usage: not serious in content or attitude or behavior; "a frivolous novel"; "a frivolous remark"; "a frivolous young woman"

Definition and meaning of frivolous (Dictionary)