- Not susceptible to death; living forever; never dying.
- (obsolete) Exceedingly great; excessive; grievous.
- Connected with or relating to immortality.
- Never to be forgotten; that merits being always remembered.
"his immortal words"
- A member of the Académie française.
- A member of an elite regiment of the Persian army.
- One who is not susceptible to death.
- (Internet) An administrator of a multi-user dungeon; a wizard.