Synonyms 1. permanent, unending. Eternal,endless,everlasting,perpetual imply lasting or going on without ceasing. That which is eternal is, by its nature, without beginning or end: God, the eternal Father. That which is endless never stops but goes on continuously as if in a circle: an endless succession of years. That which is everlasting will endure through all future time: a promise of everlasting life. Perpeptual implies continuous renewal as far into the future as one can foresee: perpetual strife between nations. 3. timeless, immortal, deathless, undying, imperishable, indestructible.
mid-14c. (in variant form eterne), from O.Fr. eternal, from L.L. aeternalis, from L. aeternus contraction of aeviternus "of great age," from aevum "age" (see eon). Related: Eternally.