| stable(adjective, calm, smooth, sensible, rational) |
| stoic(adjective, unexcitable) |
| systematic(adjective, calm, smooth, steady, temperate) |
| temperate(calm, smooth, steady, composed, unflappable) |
| there(honest, sensible, realistic, reliable, mature) |
| true blue(honest, sensible, realistic, reliable, mature) |
| trustable(honest, sensible, realistic, reliable, mature) |
| trustworthy(adjective, reliable, dependable, responsible) |
| uncaring(adjective, attitude, cold, unemotional, calmness) |
| undisturbed(calm, cool, unflappable) |
| unfailing(honest, sensible, realistic, reliable, mature) |
| unflustered(calm, cool, composed, unflappable) |
| unhurried(adjective, unexcitable) |
| unmoved(adjective, calm, cool, unflappable) |
| unromantic(adjective, reasonable, sensible, practical) |
| unsentimental(adjective, reasonable, sharp, sensible, practical) |
| up front(honest, sensible, realistic, reliable, mature) |
| valid(honest, sensible, realistic, reliable, mature) |
| advisable(adjective, sound, sensible, rational, practical) |
| agreeable(adjective, calm, smooth, steady, composed) |