Primeval
Part of speech: adjective
Definition: Belonging to the first ages. Primary; original. Primitive.
Primordial
Part of speech: adjective
Definition: first, earliest or originalcharacteristic of the earliest stage of the development of an organism of, or relating to a primordiumprimeval
Example sentence: The Jungian view of drama would be that it affects all of our imaginations and somehow taps into our hidden, ancient, primordial memories.