noun

1. One who is not susceptible to death.

2. A member of an elite regiment of the Persian army.

3. A member of the Académie française.

adjective

1. Not susceptible to death; living forever; never dying.

2. Never to be forgotten; that merits being always remembered.

   “his immortal words”

3. Connected with or relating to immortality.

Synonyms: deathless, everlasting, undeadly