- recluse, reclusive, withdrawn - withdrawn from society; seeking solitude; "lived an unsocial reclusive life"
Antonym: social (indirect, via unsocial)
- cloistered, reclusive, secluded, sequestered - providing privacy or seclusion; "the cloistered academic world of books"; "sat close together in the sequestered pergola"; "sitting under the reclusive calm of a shade tree"; "a secluded romantic spot"
Antonym: public (indirect, via private)