| cool(adjective, indifferent, detached, distant, remote) |
| cool cat(expression, adjective, unfeeling, hard-hearted, nowhere) |
| crass |
| crude(adjective, simple, unsophisticated, funky) |
| cussed(adjective, sharp, nasty) |
| cut above(expression, higher, upper, abovementioned) |
| dead set(expression, adjective, scrupulous, draconian) |
| deadpan(adjective, factual, unembellished, stoic) |
| deaf to(expression, adjective, careless, cruel, apathetic) |
| desperate(adjective, terrible, narrow) |
| detached(adjective, indifferent, distant, remote, isolated) |
| determined |
| difficult |
| disagreeable(adjective, harsh, grim, painful, bleak) |
| disciplinary(adjective, authoritarian) |
| disciplined(adjective, quiet, restrained, sober, subdued) |
| discourteous(adjective, sharp, nasty) |
| disdainful(adjective, seasoned, coldhearted) |
| dispassionate(adjective, brutal, barbarous) |
| distant(adjective, indifferent, detached, remote, isolated) |