Inceptive

a.	1.	Beginning; expressing or indicating beginning; as, an inceptive proposition; an inceptive verb, which expresses the beginning of action; - called also inchoative.
n.	1.	An inceptive word, phrase, or clause.

abecedarian, aboriginal, antenatal, autochthonous, beginning, budding, creative, elemental, elementary, embryonic, fetal, formative, foundational, fundamental, gestatory, in embryo, in its infancy, in the bud, inaugural, inchoate, inchoative, incipient, incunabular, infant, infantile, initial, initiative, initiatory, introductory, inventive, nascent, natal, original, parturient, postnatal, pregnant, prenatal, primal, primary, prime, primeval, primitive, primogenial, procreative, rudimental, rudimentary, ur, wonder