| secretive(adjective, quiet, cool, cold, restrained) |
| self-conscious(adjective, feel doubt) |
| unapproachable(adjective, person, cool, cold, sensitive) |
| unassertive(adjective, feel doubt) |
| uncertain(adjective, feel doubt) |
| unconfident(adjective, feel doubt) |
| unresponsive(adjective, reserved, reticent, taciturn) |
| unsure(adjective, feel doubt) |
| worried(adjective, feel doubt) |
| close-lipped(adjective, quiet, reserved, secret, private) |
| cool(adjective, quiet, cold, sensitive, shy) |
| disdainful(adjective, person) |
| disinterested(adjective, person, quiet, detached, thoughtful) |
| haughty(adjective, person) |
| laid back(expression, adjective, person, sensitive, hostile) |
| mum(adjective, close, quiet, restrained, aloof) |
| mute(adjective, aloof, reserved, reticent, silent) |
| offish(adjective, person, quiet, restrained, detached) |
| undemonstrative(adjective, quiet, restrained, detached, thoughtful) |
| antagonistic(adjective, cool, cold, sensitive, shy) |