Synonyms of underivative

1 Syllable

first

2 Syllables

prime, early, starting, pioneer, first-hand, infant

3 Syllables

commencing, pristine, embryonic, authentic, substratal, beginning, primordial, initial, primeval, genuine, opening, primary

4 Syllables

archetypal, foundational, underived, unevolved, inceptive, autochthonous, rudimental, primitive, original, prototypal, originals

5 Syllables

elementary, introductory, meat-and-potatoes, aboriginal, rudimentary