| reserved(adjective, quiet, secret, private, reticent) |
| reticent(adjective, quiet, reserved, secret, private) |
| taciturn(adjective, quiet, reserved, secret, private) |
| uncommunicative(adjective, quiet, reserved, secret, private) |
| close(adjective, quiet, reserved, secret, reticent) |
| mum(adjective, quiet, silent, taciturn) |
| silent(adjective, quiet, reserved, secret, private) |
| tight-lipped(adjective, quiet, reserved, secret, private) |
| closemouthed(adjective, quiet, reserved, secret, private) |
| quiet(adjective, reserved, reticent, silent, taciturn) |
| unforthcoming(adjective, quiet, reserved, secret, private) |
| avoiding contact |
| buttoning up(expression, adjective, quiet, reserved, secret) |
| clamming up(expression, adjective, quiet, reserved, secret) |
| curt(adjective, taciturn) |
| glum |
| hidden(adjective, quiet, reserved, secret, private) |
| hush-hush(adjective, quiet, reserved, secret, private) |
| introspective |
| mute |