adjective
1.
Synonyms: infinite 1, illimitable, perdurable, sempiternal, supertemporal
Related Word: endless, interminable, unceasing, unending; lasting, permanent, perpetual; deathless, immortal, undying
Contrasted words: ephemeral, evanescent, momentary, passing, short-lived, temporary, transient
Antonyms: mortal
2.
Synonyms: everlasting 1, amaranthine, ceaseless, endless, immortal, never-ending, unending, world-without-end
Related Word: deathless, undying
3.
Synonyms: continual , ceaseless, constant, endless, everlasting, interminable, perpetual, unceasing, unending, unremitting
Contrasted words: interrupted, sporadic
4.
valid or existing unaltered at all times
right and wrong are eternal verities that cannot be changed
Synonyms: ageless, dateless, intemporal, timeless
Related Word: immemorial, lasting, perdurable, permanent, perpetual; immutable, inalterable, unalterable, unchangeable, unchanging
Contrasted words: alterable, changeable, changing, fluctuating, varying; debatable, questionable, suspect