Synonyms for Sprout:

n.

add to, double, escalate, go up, increase, multiply, raise, soar, step up, go through the roof. adolescent, bine, cherub, child prodigy, imp, issue, kin, offshoot, runner, tendril, boomerang kid. aerate, bonsai, compost, cross-fertilize, cross-pollinate, deadhead, drill, feed, bed out. anther, beanstalk, blade, boll, bract, bulb, bur, aerial root. appear, appearance, loom, reappear, resurface, take shape, rear its (ugly) head. bean, bean curd, black-eyed pea, chickpea, cocoa bean, cocoa butter, coffee, coffee bean, broad-bean, bean sprouts. bear, bloom, blossom, choke, climb, come out, come up, die back, fade. break through, crop up, erupt, pop up, spring up, descend on, come and go. beginning (noun)
babyhood, beginning, birth, commencement, conception, cradle, creation, dawn, derivation, earliness, embryo, emergence, genesis, hatching, inauguration, inception, infancy, introduction, nascency, nativity, origin, precursor, prelude, preparation, source, spring, start, stem.
germinate (noun)
burgeon, grow, shoot up, take root.
sprout (noun)
bourgeon, burgeon forth, germinate, pullulate, shoot, spud.
vegetables (noun)
acorn squash, artichoke, arugula, asparagus, aubergine, beet, beetroot, bell pepper, Bok Choy, bamboo shoots.
youngster (noun)
baby, boy, child, fledgling, girl, infant, innocent, juvenile, kid, lad, lass, minor, newborn, sapling, slip, sprig, stripling, toddler, urchin, waif, youngster.

v.

begin (verb)
begin, bud, commence, conceive, create, develop, embark, emerge, form, germinate, hatch, inaugurate, induct, initialize, initiate, introduce, originate, prepare, undertake.
develop (verb)
bud, burgeon, germinate, grow, shoot, shoot up, spring, take root.

Other synonyms:

bine, grow, tendril. shoot up. offshoot, runner. begin
crop up.
bloom
burgeon.
Other relevant words:
add to, appear, bear, bine, bloom, blossom, bourgeon, burgeon, burgeon forth, come out, come up, grow, increase, issue, offshoot, pullulate, runner, shoot, shoot up, spring up, spud, take root, tendril.

Usage examples for sprout

  1. You have given me a new life, and the little sprout that is green within me would wither again if I had to return to my mother. – The Complete Historical Romances of Georg Ebers by Georg Ebers
  2. Friendships ripen and enmities deepen quickly on the trail, seeds of discord sprout and flourish in the cold. – Laughing Bill Hyde and Other Stories by Rex Beach
  3. But when she does, you must listen; and as soon as she is close to you throw away the comb, and it will sprout up into such a forest that she will never get through it at all. – Old Peter's Russian Tales by Arthur Ransome