pri·meval in BRIT, also use primaeval1. You use primeval to describe things that belong to a very early period in the history of the world. the dense primeval forests that once covered inland Brittany. = primordial
You use primeval to describe feelings and emotions that are basic and not the result of thought. a primeval urge to hit out at that which causes him pain
Belonging to the first ages; pristine; original; primitive; primary; as, the primeval innocence of man
having existed from the beginning; in an earliest or original stage or state; "aboriginal forests"; "primal eras before the appearance of life on earth"; "the forest primeval"; "primordial matter"; "primordial forms of life"