| inexpungible(adjective, duration, eternity, longitude) |
| lasting(adjective, duration, eternity, longitude) |
| lifelong(adjective, duration, eternity, longitude) |
| long-term(adjective, duration, eternity, longitude) |
| longstanding(adjective, duration, eternity, longitude) |
| old(adjective, duration, eternity, longitude) |
| perdurable(adjective, duration, eternity, longitude) |
| perennial(adjective, duration, eternity, longitude) |
| permanent(adjective, duration, eternity, longitude) |
| perpetual(adjective, duration, eternity, longitude) |
| persisting(adjective, duration, eternity, longitude) |
| stable(adjective, duration, eternity, longitude) |
| unceasing(adjective, duration, eternity, longitude) |
| undying(adjective, duration, eternity, longitude) |
| unending(adjective, duration, eternity, longitude) |
| unremitting(adjective, duration, eternity, longitude) |