Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
empty-headed is an adjective meaning "lacking seriousness; given to frivolity". It carries one recorded sense.
lacking seriousness; given to frivolity
“a dizzy blonde”
“light-headed teenagers”
“silly giggles”
Definitions, synonyms and semantic relations for empty-headed come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.