| abiding(adjective, continue, stable, constant, enduring) |
| continuous(adjective, persistent, constant, continuous, lasting) |
| unchanging(adjective, stable, constant, continuous, enduring) |
| unending(adjective, constant, continuous, enduring, lasting) |
| unremitting(adjective, constant, continuous, lasting, permanent) |
| ceaseless(adjective, persistent, constant, continuous, enduring) |
| continuing(adjective, continue, familiar, regular, continuous) |
| long-lasting(adjective, continue, familiar, constant, enduring) |
| perdurable(adjective, continue, stable, constant, enduring) |
| repeated(adjective, continuous) |
| annual(noun, adjective, regular, routine, flower) |
| yearly(adjective, enduring, perpetual, seasonal) |
| biennial(noun, flower, vegetable, shrub, bush) |
| deathless(adjective, enduring, perpetual) |
| evergreen(adjective, endless, everlasting, continuity, eternal) |
| inveterate(adjective, familiar, established, hardened, enduring) |
| old(adjective, continue, familiar, established, hardened) |
| regular(adjective, continuous) |
| sempiternal(adjective, eternal) |
| stable(adjective, constant, stability, enduring, lasting) |