| disciplined(adjective, calm, sensible, dark, restrained) |
| disdainful(adjective, hard, unfeeling, unsympathetic, hardened) |
| distant(adjective, indifferent, detached, remote, reserved) |
| doable(reasonable, useful, realistic, applied, hands-on) |
| dogged(adjective, mean, hard, harsh, inflexible) |
| dour(adjective, hard, tough, severe, sharp) |
| down to earth(expression, idiom) |
| drab(adjective, calm, sensible, dark, restrained) |
| draconian(adjective, tough, severe, firm, harsh) |
| dry(adjective, tough, rational, straightforward, sober) |
| dyed-in-the-wool(adjective, strong, hard, tough, severe) |
| earnest(adjective, calm, sensible, dark, restrained) |
| easy-going(adjective, calm, restrained, unconcerned, subdued) |
| efficient(practical, realistic, applied, hands-on, real-world) |
| empirical(reasonable, useful, realistic, applied, hands-on) |
| eschewing(adjective, calm, sensible, dark, restrained) |
| experimental(reasonable, useful, realistic, applied, hands-on) |
| factual(adjective, tough, reasonable, sensible, rational) |
| feasible(adjective, tough, reasonable, sensible, rational) |
| fixed(adjective, mean, hard, rough, harsh) |