Mawson, C.O.S., ed. (1870–1938). Roget’s International Thesaurus. 1922.

Class I. Words Expressing Abstract Relations
Section IV. Order
2. Consecutive Order

66. Beginning.

   NOUN:BEGINNING, incunabula [pl.], commencement, opening, outset, incipience, incipiency, inception, inchoation, inchoacy [rare]; introduction (precursor) [See Precursor]; alpha, initial; inauguration, ingress [archaic], début [F.], le premier pas [F.], embarkation, rising of the curtain; curtainraiser, maiden speech; exordium; outbreak, onset, brunt; initiative, move, first move; prelude, prime, proem, gambit; narrow or thin end of the wedge, fresh start, new departure.
  first stage, first blush, first glance, first impression, first sight.
  ORIGIN (cause) [See Cause]; source, rise; bud, germ [See Cause]; egg, embryo, rudiment; genesis, birth, nativity, cradle, infancy; forefront, outstart, start, starting point [See Departure]; dawn (morning) [See Morning].
  HEAD, heading; title-page; van (front) [See Front]; caption, fatihah [Ar.].
  ENTRANCE, entry; inlet, orifice, mouth, chops, lips, porch, portal, portico, propylon, door; gate, gateway; postern, wicket, threshold, vestibule; propylæum; skirts, border (edge) [See Edge]; tee.
  RUDIMENTS, elements, principia, outlines, grammar, protasis, alphabet, ABC.
   VERB:BEGIN, commence, inchoate, rise, arise originate, conceive, initiate, open, start, gin [archaic], dawn, set in, take its rise, enter upon, enter; set out (depart) [See Departure]; embark in; incept [rare], institute.
  USHER IN; lead off, lead the way, take the lead, take the initiative; inaugurate, auspicate, head; stand at the head, stand first, stand for; lay the foundations (prepare) [See Preparation]; found (cause) [See Cause]; set up, set on foot, set agoing, set abroach, set the ball in motion; apply the match to a train; launch, broach; open up, open the door to; set about, set to work; make a beginning, make a start; handsel; take the first step, lay the first stone, cut the first turf; break ground, break the ice, break cover; pass the Rubicon, cross the Rubicon; open fire, open the ball; ventilate, air; undertake [See Undertaking].
  come into existence, come into the world; make one’s début [F.], take birth; burst forth, break out; spring up, crop up.
  RECOMMENCE; begin at the beginning, begin ab ovo [L.], begin again, begin de novo [L.]; start fresh, make a fresh start, shuffle the cards, resume.
   ADJECTIVE:BEGINNING &c. v.; initial, initiatory, initiative; inceptive, introductory, incipient; proemial [rare], inaugural, inauguratory; inchoate, inchoative [rare]; embryonic, rudimentary, rudimental; primal, primary, prime, premier [rare], primigenial, primigenious or primigenous, primogenial; primeval (old) [See Oldness]; aboriginal; natal, nascent.
  FIRST, foremost, front, head, leading; maiden.
  BEGUN &c. v.; just begun &c. v.
   ADVERB:at or in the beginning &c. n.; first, in the first place, imprimis [L.], first and foremost; in limine [L.]; in the bud, in embryo, in its infancy; from the beginning, from its birth; ab initio [L.], ab ovo [L.], ab incunabilis [L.], ab origine [L.]; formerly, erst [archaic].
  1. Aller Anfang ist schwer.
  2. dimidium facti qui coepit habet.—Cicero
  3. Omnium rerum principia parva sunt.—Cicero
  4. Il n’y a que le premier pas qui coûte.