Synonyms and related words :
amaranthine, deathless, embalmed, ever-fresh, everlasting, fadeless, frozen, immortal, impregnable, incorruptible, indelible, indestructible, ineffaceable, ineradicable, inexpugnable, inextinguishable, invincible, invulnerable, irrefragable, never-dying, nonperishable, quenchless, undampable, undestroyable, undying, unfading, unquenchable