Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
disconcerted is an adjective meaning "having self-possession upset; thrown into confusion". It carries one recorded sense.
having self-possession upset; thrown into confusion
“the hecklers pelted the discombobulated speaker with anything that came to hand”
“looked at each other dumbly, quite disconcerted”
Definitions, synonyms and semantic relations for disconcerted come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.