Synonyms for Sequestered (same or very similar meaning)
WordNet sense 1 (providing privacy or seclusion):
cloistered, reclusive, secludedWordNet sense 2 (confined to particular persons or groups or providing privacy):
privateWordNet sense 3 (separated or isolated from others or a main group):
segregated, unintegratedFrom the ODE community, based on WordNetadd/edit