Immortal

a.
  1. Not mortal; exempt from liability to die; undying; imperishable; lasting forever; having unlimited, or eternal, existance.
  2. Connected with, or pertaining to immortality.
  3. Destined to live in all ages of this world; abiding; exempt from oblivion; imperishable; as, immortal fame.
  4. Great; excessive; grievous.
  5. Immortal flowers ,
    immortelles; everlastings.

n.
  1. One who will never cease to be; one exempt from death, decay, or annihilation.