immortal
adjective
1 they believe that their souls are immortal:
undying, never dying, deathless, eternal, ever living, everlasting, never-ending, endless, perpetual, lasting, enduring, constant, abiding;
imperishable, indestructible, inextinguishable, unfading, immutable, indissoluble;
rare sempiternal, perdurable.
▷antonyms mortal.
2 the immortal children's classic “The Wind in the Willows”:
timeless, perennial, evergreen, classic, traditional, ageless, time-honored, abiding, enduring, unforgettable, memorable, remembered;
famous, famed, renowned, legendary, great, eminent, outstanding, acclaimed, celebrated, commemorated, honored.
▷antonyms forgettable; obscure.