| stealthy(adjective, mean, dishonest, cunning, clandestine) |
| cryptic(adjective, obscure, strange, mysterious, secret) |
| tightlipped(adjective, quiet) |
| closelipped |
| elusive(adjective, mean, smooth, sly, sneaky) |
| hidden(adjective, quiet, obscure, plain, strange) |
| quiet(adjective, close, soft, gentle, low) |
| dark(adjective, close, strange, reticent, clandestine) |
| discreet(adjective, close, quiet, soft, low) |
| incommunicative(adjective, quiet, tightlipped) |
| mute(adjective, close, quiet, soft, low) |
| undercover(adjective, dishonest, cunning, deceitful, mysterious) |
| unsociable(adjective, quiet, shy, unfriendly, reserved) |
| buttoned up(verb, expression, adjective, phrasal verb, close) |
| backstairs(adjective, mysterious, private, restricted, reticent) |
| cagy(adjective, secret, sneaky, stealthy) |
| confidential(adjective, restricted, clandestine, underground, discreet) |
| devious(adjective, dishonest, cunning, deceitful, sly) |
| dishonest(adjective, secret, sneaky, stealthy) |
| enigmatic(adjective, strange, mysterious, private, reticent) |