Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
unretrievable is an adjective meaning "impossible to recover or recoup or overcome". It carries one recorded sense.
impossible to recover or recoup or overcome
“an irretrievable loss”
“irretrievable errors in judgment”
Definitions, synonyms and semantic relations for unretrievable come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.