| dispassionate(adjective, calm, cool, relaxed, casual) |
| dogged(adjective, mean, hard, harsh, inflexible) |
| dry(adjective, cool, blank, aloof, unemotional) |
| effortless(adjective, calm, cool, relaxed, detached) |
| emotionless(adjective, cool, blank, aloof, unemotional) |
| firm(adjective, mean, hard, tough, harsh) |
| fixed(adjective, mean, hard, tough, harsh) |
| hanging tough(expression, adjective, mean, hard, rigid) |
| hard(adjective, mean, tough, harsh, stiff) |
| hard-boiled(adjective, mean, hard, tough, harsh) |
| hard-hearted(adjective, mean, hard, tough, harsh) |
| hard-nosed(adjective, mean, hard, tough, harsh) |
| hardboiled(adjective, stiff, unfeeling, rigid, callous) |
| hardened(adjective, cool, blank, aloof, unemotional) |
| harsh(adjective, mean, hard, tough, inflexible) |
| heartless(adjective, mean, hard, cool, tough) |
| immovable(adjective, mean, hard, tough, harsh) |
| imperturbable(adjective, calm, cool, relaxed, casual) |
| implacable(adjective, mean, hard, tough, harsh) |
| incurious(adjective, calm, cool, relaxed, detached) |