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