a. ancient; primitive; belonging to the first or earliest age; original or ancient
The archaeologist claimed that the skeleton was primeval origin, though in fact it was the remains of a modern day monkey.
Sentence in Classic:
The shade of the original Kurtz frequented the bedside of the hollow sham, whose fate it was to be buried presently in the mold of primeval earth.
Heart of Darkness By Joseph Conrad Context
It would come, and it would come; a grisly thing, a specter born in the black caverns of terror; a power primeval, cosmic, shadowing the tortures of the lost souls flung out to chaos and destruction.
The Jungle By Upton Sinclair Context