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

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

Related terms: frivolous
Similar spelling:   empty-handed
  empty-bellied