secluded

Synonyms: abandoned alone aloof beleaguered blockaded cloistered close closet confidential covert cut off deserted hermetic hidden incommunicado insular isolate lonely lonesome off the beaten track out-of-the-way personal private quarantined quiet reclusive remote removed reserved retired screened secluse seclusive secret segregated sequestered shut off shy singular solitary tucked away unapproachable unfrequented uninhabited unsociable withdrawn

Antonyms: joining mingling open public sociable socializing