Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
uncomprehensible is an adjective meaning "difficult to understand". It carries one recorded sense.
difficult to understand
“the most incomprehensible thing about the universe is that it is comprehensible”
Definitions, synonyms and semantic relations for uncomprehensible come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.