Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
never-say-die is an adjective meaning "impossible to subdue". It carries one recorded sense.
impossible to subdue
Definitions, synonyms and semantic relations for never-say-die come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.