Definition of beginning :
2. of Begin
3. That which begins or originates something; the first cause; origin; source.
4. That which is begun; a rudiment or element.
5. The act of doing that which begins anything; commencement of an action, state, or space of time; entrance into being or upon a course; the first act, effort, or state of a succession of acts or states.
initiation, offset printing, solution, commencement ceremony, low gear, first-class honours degree, blood, germ, graduation exercise, root word, mother, parentage, showtime, heart, generator, get-go, stemma, stolon, jump, arising, parent, blood line, low, origination, set-back, number one, first base, bloodline, send-off, ascendent, offset, reservoir, fountainhead, extraction, lineage, incipiency, onset, provenience, reference, pedigree, well, starting time, branch, rootstock, opening, kickoff, starting line, stock, starting signal, launch, setoff, scratch line, ancestor, rootage, ascendant, commencement exercise, runner, leadoff, number 1, startle, root, outgrowth, scratch, ancestry, informant, root system, theme, incipience, head start, rise, outset, author, seed, counterbalance, line of descent, offshoot, provenance, start-off, radical, fount, antecedent, nascence, fountain, first gear, tooth root, descent, etymon, graduation, base, line
beginning (part of speech: verb)
original, nativity, early, birthing, derivation, primeval, nascent, conception, start, forming, primal, foremost, incipient, hatching, embarking, introduction, initiating, cradle, precursory, dawning, preparing, germinating, first, babyhood, alpha, emerging, stem, stemming, conceiving, germinal, maiden, source, formative, introducing, earliness, springing, preparatory, infant, dawned, creating, commencing, sprout, prelude, developing, preparation, creation, infancy, inaugural, initializing, originating, newborn, origin, sprouting, spring, preliminary, Genesis, introductory, undertaking, budding, inauguration, infantile, dawn, baby, emergence, embryonic, fetal, aboriginal, starting, inaugurating, initial, inducting, primordial, birth, nascency, inception, commencement, embryo, precursor, new
originating (part of speech: verb)