Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
fatheaded is an adjective meaning "(used informally) stupid". It carries one recorded sense.
(used informally) stupid
Definitions, synonyms and semantic relations for fatheaded come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.