sempiternal

adjective Literary.

1. everlasting; eternal.

adjective

1. literary everlasting; eternal

adj.c.1400, from Old French sempiternel “eternal, everlasting” (13c.) or directly from Late Latin sempiternalis, from Latin sempiternus “everlasting,” from semper “always, ever” (see semper-) + aeternus “eternal” (see eternal). Related: Sempiternally.