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