| expressionless(adjective, blank, unemotional, emotionless, inexpressive) |
| inaccessible |
| incommunicable(adjective, quiet, restraint, taciturn, sounds) |
| laconic(still, aloof, reserved, hushed, uncommunicative) |
| meek(adjective, quiet, simple, moderate, modest) |
| moderate(adjective, calm, quiet, reasonable, mild) |
| reclusive(adjective, quiet, gentle, cold, unfriendly) |
| repressed |
| retired(adjective, quiet, obscure, deep, humble) |
| secret(adjective, quiet, humble, distant, minor) |
| segregative(adjective, secret, sneaky, stealthy) |
| speechless(adjective, close, quiet, soft, low) |
| stoic(adjective, cool, blank, aloof, impassive) |
| suppressed |
| terse |
| tightlipped(adjective, quiet, restraint, taciturn, sounds) |
| unassertive(adjective, quiet, modest, nervous, humble) |
| uncommunicable(adjective, quiet, restraint, taciturn, sounds) |
| unobtrusive(adjective, calm, close, quiet, soft) |
| unostentatious(adjective, person, feelings) |