| set(adjective, tough, severe, firm, honest) |
| soft(adjective, calm, quiet, reasonable, sensible) |
| sombre |
| sound(adjective, calm, quiet, reasonable, sensible) |
| steady(adjective, calm, quiet, set, cool) |
| stickling(adjective, tough, severe, firm, harsh) |
| stuffy(adjective, tough, severe, firm, harsh) |
| subdued(adjective, calm, dull, quiet, reasonable) |
| sure enough(expression, honest, true, straightforward, serious) |
| thoughtful(adjective, dull, quiet, severe, honest) |
| toned down(expression, adjective, calm, quiet, reasonable) |
| tough-minded |
| true(open, honest, straightforward, straight, serious) |
| true-blue(open, honest, true, straightforward, straight) |
| trustworthy(open, honest, true, straightforward, straight) |
| twenty-four carat(expression, honest, true, straightforward, serious) |
| unaffected(open, honest, true, rational, straightforward) |
| uncomic |
| undesigning(open, honest, true, straightforward, straight) |
| undissembled(open, honest, true, straightforward, straight) |