Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
clearheaded is an adjective meaning "not mentally confused; able to think clearly and act intelligently". It carries one recorded sense.
not mentally confused; able to think clearly and act intelligently
Definitions, synonyms and semantic relations for clearheaded come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.