| unswerving(adjective, smooth, firm, solid, level) |
| direct(adjective, smooth, right, flat, solid) |
| steadfast(adjective, strong, flat, firm, solid) |
| steady(adjective, quiet, strong, smooth, right) |
| unwavering(adjective, strong, direct, smooth, right) |
| straight(adjective, adverb, direct, smooth, right) |
| even(adjective, quiet, smooth, soft, gentle) |
| firm(noun, adjective, solid, intense, certain) |
| consistent(adjective, strong, direct, smooth, right) |
| constant(adjective, strong, smooth, right, flat) |
| invariable(adjective, quiet, smooth, soft, gentle) |
| regular(adjective, quiet, smooth, right, soft) |
| unchanging(adjective, smooth, right, severe, flat) |
| persistent(adjective, strong, flat, intense, certain) |
| resolute(adjective, strong, firm, solid, certain) |
| rigid(adjective, severe, harsh, cruel, determined) |
| staunch(adjective, strong, solid, intense, deliberate) |
| uniform(adjective, quiet, smooth, right, soft) |
| determined(adjective, strong, severe, flat, firm) |
| unchangeable(adjective, strong, flat, certain, determined) |