| solitary(adjective, close, quiet, separate, simple) |
| covert(adjective, close, quiet, secret, hidden) |
| separate(adjective, simple, special, individual, distinct) |
| isolated(adjective, quiet, separate, simple, mild) |
| remote(adjective, close, quiet, mild, shy) |
| especial(adjective, separate, simple, extraordinary, unusual) |
| gut(adjective, heart, secret, inside, personal) |
| home(adjective, house, heart, family, inside) |
| interior(adjective, heart, secret, inside, personal) |
| retired(adjective, close, quiet, obscure, mild) |
| singular(adjective, close, quiet, separate, simple) |
| innermost(adjective, secret, inside, personal, central) |
| peculiar(adjective, characteristic, extraordinary, unusual, exceptional) |
| surreptitious(adjective, secret, unknown, hidden, clandestine) |
| viscerous(adjective, heart, secret, inside, personal) |
| hush-hush(adjective, show, informal, reserved, intimate) |
| in-house(adjective, inside, central, interior, inner) |
| off the record(expression, adjective, idiom, intimate, personal) |
| restricted(adjective, separate, simple, special, individual) |
| close(adjective, quiet, obscure, dark, familiar) |