| bold |
| brick-wall(adjective, severe, firm, solid, vigorous) |
| by the book(expression, adjective, idiom, severe, stiff) |
| by the numbers(expression, adjective, idiom, severe, stiff) |
| certain(adjective, firm, determined, usual, regular) |
| compelling(adjective, severe, stiff, tight, strict) |
| concluded(adjective, firm, determined, usual, regular) |
| confining(adjective, severe, stiff, tight, strict) |
| confirmed(adjective, firm, determined, usual, regular) |
| constant(adjective, strong, firm, fixed, impassive) |
| convincing(adjective, severe, stiff, tight, strict) |
| courageous |
| customary(adjective, firm, determined, usual, regular) |
| decided(adjective, strong, firm, intense, deliberate) |
| decisive(adjective, firm, determined, usual, regular) |
| definite(adjective, strong, flat, firm, certain) |
| diligent |
| drawing(adjective, severe, stiff, tight, strict) |
| enduring(adjective, strong, firm, solid, certain) |
| entrenched(adjective, firm, determined, usual, regular) |