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