| unassertive(adjective, calm, quiet, gentle, subdued) |
| unbiased(adjective, indifferent, detached, distant, apathetic) |
| uncommunicative(adjective, indifferent, restrained, detached, distant) |
| uncomplaining(adjective, calm, quiet, understanding, gentle) |
| understanding(adjective, calm, quiet, gentle, restrained) |
| undisturbed(adjective, calm, cool, smooth, still) |
| unfaltering(adjective, persevering) |
| unflagging(adjective, persevering) |
| unimpressed(adjective, indifferent, detached, distant, apathetic) |
| unimpressible(adjective, cool, blank, aloof, unemotional) |
| uninterested(adjective, indifferent, restrained, detached, distant) |
| uninvolved(adjective, indifferent, detached, distant, apathetic) |
| unprejudiced(adjective, indifferent, detached, distant, apathetic) |
| unprotesting(adjective, calm, quiet, gentle, ready) |
| unresisting(adjective, calm, quiet, gentle, ready) |
| unresponsive(adjective, cold, indifferent, restrained, detached) |
| unsocial(adjective, indifferent, detached, distant, apathetic) |
| unsympathetic(adjective, indifferent, detached, distant, apathetic) |
| untiring(adjective, calm, quiet, understanding, gentle) |
| untouched(adjective, calm, cool, cold, indifferent) |