Synonyms of beginning

1 Syllable
spring, top, dawn, birth, fresh, first, root, rise, fount
2 Syllables
wellspring, dawning, larval, threshold, kickoff, outset, fresher, alpha, simplex, lead-in, source, premier, takeoff, cause, basis, hornbook, blastoff, freshest, outbreak, maiden, marchland, leadin, intro, proemial, onset, rootstock, budding, basal, first-hand, debut, creation
3 Syllables
prologue, nuts-and-bolts, induction, embryonic, opener, incepted, nascency, incipient, forepart, abuttal, boundary, untapped, boundaries, rudiment, origin, abuttals, prelude, prefacing, foreground, lying-in, preface, inception, nascence, premiere, exordium, authored, forefront, infancy, opening, genesis, prefaced
4 Syllables
prelusive, provenience, commencement, instatement, foundational, trial-and-error, emanations, underived, ebullition, derivations, initiation, installation, presentation, original, pupilage, introduction, initiations, precursory, prefatory, natality, rudimental, originals, inaugural, derivation, introductions, inductive, emanation, establishing
5 Syllables
origination, meat-and-potatoes, inauguration, rudimentary, interpolation, prolegomenon, investiture, elementary, originating, experimental, preparative, interpolations, introductory, originations, incunabulum
6 Syllables
underivative