| careless(adjective, hard, indifferent, cruel, apathetic) |
| casual(adjective, calm, indifferent, restrained, detached) |
| clear-headed(adjective, calm, sensible, dark, restrained) |
| coarse(adjective, simple, severe, bleak, stark) |
| coldhearted(adjective, hard, cold, indifferent, detached) |
| collected(adjective, calm, sensible, dark, restrained) |
| commonsense(hard, sound, reasonable, sensible, practical) |
| commonsensical(reasonable, useful, practical, realistic, applied) |
| composed(adjective, calm, sensible, dark, restrained) |
| constrained(adjective, calm, sensible, dark, restrained) |
| constructive(reasonable, useful, realistic, applied, hands-on) |
| contemptuous(adjective, hard, unfeeling, unsympathetic, hardened) |
| cooked |
| dead-hearted(adjective, bad, cold, aloof, no feelings) |
| dead-pan(adjective, bad, cold, aloof, no feelings) |
| dead set(expression, adjective, tough, severe, firm) |
| deadpan(adjective, tough, rational, straightforward, detached) |
| deaf to(expression, adjective, hard, careless, indifferent) |
| demanding |
| disciplinary(adjective, strong, hard, tough, severe) |