| inextinguishable(adjective, moral, stability, principled) |
| lasting(adjective, constant, enduring, permanent, durable) |
| unceasing(adjective, continuous, lasting, permanent, everlasting) |
| amaranthine(adjective, everlasting, eternal, unending, perpetuity) |
| constant(adjective, stable, fixed, continuous, enduring) |
| indelible(adjective, stability) |
| interminable(adjective, continuous, everlasting, uninterrupted, eternal) |
| undestroyable(moral, principled) |
| continual(adjective, stable, constant, continuous, enduring) |
| dateless(lasting, permanent, everlasting, unending, undying) |
| evergreen(adjective, everlasting, eternal, perpetuity, undying) |
| indissoluble(adjective, stability, permanent, everlasting, eternal) |
| never-ending(adjective, continuous, everlasting, uninterrupted, eternal) |
| renewable |
| unchanging(adjective, stable, fixed, constant, enduring) |
| fixed(adjective, stable, constant, enduring, lasting) |
| forever(adjective, stable, constant, vast, enduring) |
| ineradicable |
| long-lasting(adjective, stable, constant, enduring, lasting) |
| never-dying |