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