| restrictive |
| reticent(adjective, obscure, reserved, mysterious, secret) |
| several(adjective, single, alone, isolation, apart) |
| sneaking(secret, hidden, sneak, sneaky, covert) |
| stealthy(adjective, quiet, secret, hidden, clandestine) |
| underground(adjective, obscure, secret, unknown, hidden) |
| veiled(adjective, obscure, secret, unknown, hidden) |
| not for publication(expression, adjective, idiom, secret, confidential) |
| alone(adjective, close, quiet, separate, simple) |
| aloof(adjective, close, quiet, limited, select) |
| arcane(adjective, obscure, intimate, secret, unknown) |
| centralized(adjective, inside, interior, inner, internal) |
| circumscribed(adjective, limited, select, restricted, inside) |
| civic(adjective, inside, interior, inner, internal) |
| clannish |
| common soldier(noun, expression, idiom) |
| cryptic(adjective, obscure, mysterious, reticent, unknown) |
| definite |
| detailed(adjective, secret, personal, innermost) |
| determinate |