| closemouthed(adjective, close, quiet, restrained, still) |
| detached(adjective, cold, unfriendly, aloof, distant) |
| inhibited(adjective, close, quiet, cool, restrained) |
| reluctant(adjective, modest, humble, shy, hesitant) |
| unassuming(adjective, person, feelings) |
| unpretentious(adjective, person, feelings) |
| unresponsive(adjective, close, quiet, cool, restrained) |
| unsociable(adjective, cool, cold, indifferent, restrained) |
| antisocial(adjective, cold, unfriendly, aloof, distant) |
| chilly(adjective, cool, attitude, indifferent, hot) |
| clandestine(adjective, secret, sneaky, stealthy) |
| curt(adjective, aloof, reserved, taciturn, uncommunicative) |
| formal(adjective, close, quiet, gentle, mild) |
| frigid(adjective, close, quiet, cool, gentle) |
| hesitant(adjective, quiet, obscure, restrained, modest) |
| mute(adjective, close, quiet, soft, low) |
| private(adjective, obscure, reserved, mysterious, secret) |
| shrinking(adjective, calm, quiet, reasonable, mild) |
| backward(adjective, quiet, modest, humble, shy) |
| buttoned up(verb, expression, adjective, phrasal verb, close) |