| lasting(adjective, continue, persistent, permanent, continuing) |
| enduring(adjective, continue, familiar, established, hardened) |
| perennial(adjective, continue, familiar, enduring, lasting) |
| perpetual(adjective, familiar, established, permanent, recurrent) |
| long-lasting(adjective, continue, familiar, established, hardened) |
| chronic(adjective, persistent, continuous, hardened, lasting) |
| eternal(adjective, permanent) |
| durable(adjective, continue, continuing) |
| permanent(adjective, continue, continuing) |
| continuing(adjective, continue, familiar, persistent, established) |
| long-standing(adjective, continue, persistent, hardened, lasting) |
| old(adjective, continue, familiar, established, hardened) |
| persistent(adjective, continue, continuous, hardened, lasting) |
| abiding(adjective, continue, persistent, hardened, lasting) |
| inveterate(adjective, familiar, persistent, established, hardened) |
| perdurable(adjective, continue, permanent, continuing) |
| stable(adjective, permanent) |
| aged |
| everlasting |
| lifelong(adjective, familiar, persistent, established, hardened) |