| secret(adjective, quiet, show, separate, dishonest) |
| covert(adjective, show, secret, hidden, clandestine) |
| clandestine(adjective, show, dishonest, secret, hidden) |
| surreptitious(adjective, dishonest, secret, hidden, sneaky) |
| confidential(adjective, show, separate, intimate, secret) |
| private(adjective, show, reserved, intimate, secret) |
| undercover(adjective, show, dishonest, secret, hidden) |
| hugger-mugger(adjective, quiet, intriguing) |
| hidden(adjective, quiet, separate, reserved, secret) |
| classified(noun, adjective, intimate, secret, private) |
| cloak-and-dagger(adjective, show, full, secret, clandestine) |
| concealed(adjective, separate, dishonest, secret, hidden) |
| hole-and-corner(adjective, secret, private, hidden, spy) |
| restricted(adjective, close, secret, hidden, clandestine) |
| stealthy(adjective, quiet, dishonest, secret, hidden) |
| under wraps(expression, adjective, idiom, show, dishonest) |
| underground(adjective, secret, hidden, spy, clandestine) |
| furtive(adjective, dishonest, secret, hidden, sneaky) |
| inside(adjective, show, intimate, private, personal) |
| quiet(verb, adjective, calm, dull, suppress) |