Primeval(a.) Belonging to the first ages; primitive; as, the primeval innocence of man.
Thesaurus Entries
abecedarian, aboriginal, ancestral, ancient, antenatal, antepatriarchal, atavistic, autochthonous, basal, basic, beginning, budding, central, creative, crucial, early, elemental, elementary, embryonic, erstwhile, fetal, fore, formative, former, foundational, fundamental, generative, genetic, germinal, gestatory, humanoid, immemorial, in embryo, in its infancy, in ovo, in the bud, inaugural, inceptive, inchoate, inchoative, incipient, incunabular, infant, infantile, initial, initiative, initiatory, introductory, inventive, late, nascent, natal, old, olden, once, onetime, original, parturient, past, patriarchal, postnatal, preadamite, preglacial, pregnant, prehistoric, prehuman, prenatal, previous, primal, primary, prime, primitive, primogenial, primoprimitive, primordial, prior, pristine, procreative, protogenic, protohistoric, protohuman, quondam, radical, recent, rudimental, rudimentary, seminal, sometime, then, ur