airheaded
1. [ adjective ] lacking seriousness; given to frivolity
Synonyms: light-headed silly dizzy giddy lightheaded featherbrained empty-headed
Examples:

"a dizzy blonde" "light-headed teenagers" "silly giggles"

Related terms: frivolous
2. [ adjective ] lacking seriousness; given to frivolity
Synonyms: light-headed silly dizzy giddy featherbrained empty-headed
Examples:

"a dizzy blonde" "light-headed teenagers" "silly giggles"

Related terms: frivolous