Synonyms for Primal:

adj.

beginning (adjective)
germinal, fetal, inaugural, introductory, emerging, new, original, precursory, foremost, infant, infantile, Dawned, genesis, primordial, sprouting, preliminary, Commencing, primeval, preparatory, maiden, initial, first, aboriginal, starting, beginning, budding, embryonic, incipient, baby, nascent, hatching, alpha, formative, newborn, early.
earliest (adjective)
primordial.
early (adjective)
initial.
in the beginning (adjective)
early.
primeval; primary (adjective)
aboriginal, central, first, original, primordial, early, fundamental.
pure (adjective)
indivisible, unadulterated, angelic, stainless, faultless, essential, undefiled, formative, basal, plain, uncluttered, unblemished, sinless, untainted, basic, primary, honorable, pure, unsullied, bare, spotless, undiluted, innocent, unadorned, immaculate, untarnished, decent, white, Simon-pure, foundational, chaste, fundamental, nascent, simple, irreducible, austere, stark, elemental, unalloyed, elementary, atomic, prime, purebred, aboriginal, guiltless, blameless, monolithic, clear, clean, virtuous.

n.

depth, burning, bitter, casual, deep, deep-seated, affective, acutely, blind. primal (noun)
fundamental, aboriginal, of import, primordial, important, early, primeval, cardinal, key, central, primaeval.

Other synonyms:

Other relevant words:
of import, central, key, blind, acutely, affective, important, depth, deep-seated, aboriginal, cardinal, primaeval, burning, bitter, deep, casual.