| eternal(adjective, certain, pause, fixed, persistent) |
| staying(verb, adjective, strain, firmness, labour) |
| unalterable(adjective, calm, strong, secure, strain) |
| everlasting(adjective, strong, stable, persistent, constant) |
| settled(adjective, strain, firmness, labour, hardiness) |
| stout(adjective, strain, firmness, labour, hardiness) |
| sustained(adjective, great, strain, deep, high) |
| unyielding(adjective, strain, firmness, labour, hardiness) |
| permanence |
| abiding(verb, adjective, calm, strong, secure) |
| impregnable(adjective, strain, firmness, labour, hardiness) |
| resistant(adjective, strain, firmness, labour, hardiness) |
| rigid(adjective, strain, firmness, labour, hardiness) |
| stationary(adjective, strain, firmness, labour, hardiness) |
| substantial(adjective, strain, firmness, labour, hardiness) |
| continuing(verb, adjective, continue, certain, fixed) |
| quiescent(adjective, strain, firmness, labour, hardiness) |
| seamless(adjective, strain, firmness, continuous, labour) |
| stabile(adjective, calm, strong, secure, strain) |
| tight(adjective, strain, firmness, labour, hardiness) |