| blank(adjective, person, feelings, response, emotions) |
| bloody-minded(adjective, persistent, obstinate, insistent, dogged) |
| bound(adjective, strong, tough, flat, firm) |
| brass-bound(adjective, determined, resolute, obstinate, uncompromising) |
| brick |
| cantankerous(adjective, tough, firm, determined, unreasonable) |
| cement |
| cold-blooded(adjective, person, mean, harsh, feelings) |
| constant(adjective, strong, secure, flat, firm) |
| dead set on(expression, adjective, idiom, strong, secure) |
| definite(adjective, strong, severe, flat, firm) |
| demanding(adjective, persistent, obstinate, insistent, dogged) |
| dispassionate(adjective, cold, indifferent, unyielding) |
| dour |
| exact(adjective, strong, severe, flat, certain) |
| expressionless(adjective, person, feelings, response, emotions) |
| froward(adjective, deliberate, determined, persistent, obstinate) |
| granitic |
| hard-core(adjective, strong, hard, tough, firm) |
| hard-line(adjective, strong, hard, tough, rough) |