| durable(adjective, calm, strong, tough, continue) |
| lasting(adjective, calm, strong, tough, continue) |
| perennial(adjective, continue, stable, constant, enduring) |
| perpetual(adjective, stable, constant, endless, enduring) |
| enduring(adjective, calm, strong, continue, substantial) |
| eternal(adjective, pause, endless, enduring, permanent) |
| indestructible(adjective, strong, tough, stable, constant) |
| stable(adjective, tough, fixed, sturdy, constant) |
| permanent(adjective, calm, strong, continue, sturdy) |
| abiding(adjective, calm, strong, continue, substantial) |
| everlasting(adjective, strong, stable, constant, enduring) |
| long-lived(adjective, continue, permanent, continuing) |
| persistent(adjective, continue, sturdy, constant, enduring) |
| constant(adjective, calm, strong, substantial, stable) |
| long-standing(adjective, continue, steady, even, unchanging) |
| imperishable(adjective, stable, constant, enduring, lasting) |
| long-lasting(adjective, tough, continue, sturdy, enduring) |
| sempiternal(adjective, eternal) |
| undestroyable |
| chronic(adjective, continuing) |