| steady(adjective, calm, strong, secure, firm) |
| indestructible(adjective, stable, constant, enduring, unable) |
| unvarying(adjective, calm, strong, secure, firm) |
| consistent(adjective, dull, steady, stable, regular) |
| even(adjective, calm, strong, secure, firm) |
| resolute(adjective, calm, strong, hard, determined) |
| rigid(adjective, set, hard, regular, fixed) |
| irreversible(adjective, fixed, even, rigid, inflexible) |
| unchanged(adjective, fixed, static, unvarying, unchangeable) |
| unwavering(adjective, calm, set, strong, solid) |
| durable(adjective, calm, strong, solid, steady) |
| immovable(adjective, set, hard, steady, regular) |
| inalterable(adjective, inflexible, flexible) |
| obstinate(adjective, set, strong, hard, severe) |
| stubborn(adjective, firm, steady, fixed, rigid) |
| undeviating(adjective, even, constant, rigid, inflexible) |
| adamant(adjective, hard, firm, fixed, inflexible) |
| hard(adjective, resolute, rigid, inflexible, strict) |
| irrevocable(adjective, fixed, unchangeable) |
| perennial(adjective, stable, constant, stability, enduring) |