Synonyms and related words :
abiding, amaranthine, embalmed, eternal, ever-fresh, everlasting, fadeless, frozen, immortal, imperishable, impregnable, incorruptible, indelible, indestructible, ineffaceable, ineradicable, inexpugnable, inextinguishable, invincible, invulnerable, lasting, never-dying, never-ending, nonperishable, permanent, persisting, quenchless, timeless, undampable, undestroyable, undying, unending, unfading, unquenchable,