| tight-lipped(adjective, quiet, restrained, aloof, reserved) |
| timid(adjective, cool, cold, sensitive, shy) |
| distant(adjective, quiet, cold, unfriendly, aloof) |
| hesitant(adjective, quiet, restrained, discreet, feel doubt) |
| remote(adjective, person, feelings) |
| timorous(adjective, quiet, restrained, detached, thoughtful) |
| unsocial(adjective, person, cool, cold, feelings) |
| anxious(adjective, feel doubt) |
| close(adjective, quiet, restrained, aloof, reserved) |
| close-mouthed(adjective, quiet, restrained, aloof, reticent) |
| coldhearted(adjective, person, feelings) |
| diffident(adjective, feel doubt) |
| doubtful(adjective, feel doubt) |
| fearful(adjective, feel doubt) |
| forbidding(adjective, person, feelings) |
| guarded(adjective, reserved, mysterious, private, reticent) |
| icy(adjective, person, feelings) |
| inhibited(adjective, feel doubt) |
| mousy(adjective, feel doubt) |
| restrained(adjective, quiet, thoughtful, reticent, silent) |