| tasteful(adjective, calm, quiet, reasonable, mild) |
| temperate(calm, quiet, reasonable, mild, controlled) |
| unapproachable |
| unassertive(reticent, unassuming, undemonstrative, self-effacing) |
| uncongenial |
| under control(expression, adjective, calm, quiet, reasonable) |
| under wraps(expression, adjective, calm, quiet, reasonable) |
| unexcessive(adjective, calm, quiet, reasonable, mild) |
| unexpansive(adjective, calm, quiet, reasonable, mild) |
| unextreme(adjective, calm, quiet, reasonable, mild) |
| unobtrusive(adjective, calm, quiet, reasonable, mild) |
| unsociable(reticent, unassuming, undemonstrative, self-effacing) |
| uptight(adjective, calm, quiet, reasonable, mild) |
| in control of yourself(expression, idiom, calm, controlled, self-possessed) |
| laid back(expression, adjective, reasonable, restrained, tasteful) |
| nonaggressive(calm, controlled, self-possessed) |
| self-possessed(calm, controlled) |
| unemotional(calm, controlled, self-possessed) |