| timeless(adjective, continue, steady, constant, continuous) |
| undying(adjective, constant, continuous, endless, enduring) |
| immortal(adjective, continue, constant, endless, lasting) |
| unbroken(verb, adjective, sound, steady, stable) |
| infinite(adjective, end, constant, abundant, endless) |
| unchanging(adjective, steady, stable, regular, fixed) |
| non-stop(adjective, continual) |
| abiding(adjective, stable, fixed, persistent, constant) |
| ageless(adjective, fixed, unchanging, permanent, unchangeable) |
| fixed(adjective, dull, determined, usual, steady) |
| imperishable(adjective, constant, enduring, lasting, continual) |
| relentless(adjective, continue, determined, steady, persistent) |
| sempiternal(adjective, lasting, continual, eternal, perpetuity) |
| unvarying(adjective, steady, stable, regular, fixed) |
| continuing(adjective, wild, familiar, stable, fixed) |
| habitual(adjective, usual, steady, stable, regular) |
| immutable(adjective, steady, stable, regular, fixed) |
| recurrent(adjective, steady, regular, constant, continuous) |
| regular(verb, adjective, sound, usual, steady) |
| unfailing(adjective, continue, steady, fixed, persistent) |