| immovable(adjective, stable, changing) |
| methodical(adjective, ordinary, usual, normal, even) |
| static(adjective, severe, firm, harsh, solid) |
| unaltered(adjective, uniform, stability, unchanging, unchanged) |
| unbroken(adjective, quiet, smooth, soft, gentle) |
| unmodifiable(adjective, fixed, even, constant, rigid) |
| unremitting(adjective, persistent, continuous, endless, relentless) |
| abiding(adjective, calm, strong, secure, firm) |
| certain |
| consonant(adjective, ordinary, usual, steady, routine) |
| flat(adjective, quiet, soft, gentle, level) |
| ironclad(adjective, set, hard, stiff, inflexible) |
| monolithic(adjective, even, rigid, inflexible, consistent) |
| perennial(adjective, stable, constant, continuous, stability) |
| unceasing(adjective, persistent, continuous, endless, relentless) |
| undiversified(adjective, even, constant, rigid, inflexible) |
| equal(adjective, smooth, right, like, straight) |
| habitual(adjective, dull, ordinary, usual, steady) |
| incessant(adjective, persistent, continuous, endless, relentless) |
| irrevocable(adjective, fixed, unchangeable) |