aevum, evum; etern-; aeternus

(Latin: age; space of time, ever, always; eternity)

Ab aeterno (Latin phrase)
Translation: "Since the beginning of time."

The audience was reminded that ab aeterno the hawks have nested on the cliffs near the lake.

Literally, "from eternity" or "of no date of origin".

aeon, eon
age
aged
aye
Ever.
coetaneous
Of equal age, duration, or period; coeval.
coeternal
coeternally
coeval
coeval, coaeval (s) (noun); coevals, coaevals (pl)
1. Originating or existing during the same time.
2. Another person of the same era or period; a contemporary.
3. Etymology: from Latin coaevus which comes from co-, "jointly, in common" + aevum, "age".
coevally (adverb), more coevally, most coevally
Pertaining to having the same age or date of origin: Like many of his friends, Jim was striving to coevally get the best education possible for the future.
eternal
Etymology: from Old French eternal, from Late Latin aeternalis, from Latin æternus contraction of aeviternus, "of great age", from ævum, "age".
eternally
eternity
eval (adjective)
Relating to time, duration, or to an age.