Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
shut-in is an adjective and noun meaning "somewhat introverted". It carries 3 recorded senses.
somewhat introverted
confined usually by illness
someone who is incapacitated by a chronic illness or injury
Definitions, synonyms and semantic relations for shut-in come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.