| set(verb, adjective, strong, secure, continue) |
| durable(adjective, strong, secure, strain, firm) |
| invariable(adjective, strain, firmness, labour, hardiness) |
| perpetual(adjective, strain, firmness, labour, hardiness) |
| tight(adjective, strain, firmness, labour, hardiness) |
| unyielding(adjective, strain, firmness, labour, hardiness) |
| established(adjective, verb, state, strong, certain) |
| long-standing(adjective, strain, firmness, labour, hardiness) |
| surefooted(adjective, strain, firmness, labour, hardiness) |
| well-established(adjective, strain, firmness, labour, hardiness) |
| lingering(adjective, strain, firmness, labour, hardiness) |
| non-fluctuating(adjective, strain, firmness, labour, hardiness) |
| robust(adjective, strain, firmness, labour, hardiness) |
| stabile(adjective, strain, firm, solid, stable) |
| substantial(adjective, strong, strain, firm, solid) |
| sustained(adjective, strain, firmness, labour, hardiness) |
| decided(verb, adjective, set, end, complete) |
| rooted(verb, adjective, strong, secure, solid) |
| confirmed(verb, adjective, set, continue, solid) |
| arranged(verb, adjective, certain, determined, usual) |