| imperishable(adjective, constant, enduring, lasting, infinite) |
| indestructible(adjective, strong, stable, constant, unable) |
| never-ending(adjective, continue, constant, continuous, endless) |
| unchanging(adjective, steady, stable, fixed, persistent) |
| abiding(adjective, stable, persistent, constant, continuous) |
| immutable(adjective, stable, fixed, persistent, constant) |
| infinite(adjective, end, constant, abundant, endless) |
| unremitting(adjective, continue, steady, persistent, constant) |
| ageless |
| fixed(adjective, stable, persistent, constant, continuous) |
| uninterrupted(adjective, continue, steady, persistent, constant) |
| boundless(adjective, constant, absolute, abundant, endless) |
| changeless(adjective, stable, fixed, constant, enduring) |
| sempiternal(adjective, eternal, perpetuity) |
| unlimited(adjective, constant, abundant, endless, supreme) |
| unvarying(adjective, steady, persistent, constant, continuous) |
| aeonian |
| invariable(adjective, set, stable, persistent, constant) |
| limitless(adjective, constant, absolute, abundant, endless) |
| persistent(adjective, continue, steady, stable, constant) |