youngster(n = noun.person) child, fry, kid, minor, nestling, nipper, shaver, small fry, tiddler, tike, tyke - a young person of either sex; "she writes books for children"; "they're just kids"; "`tiddler' is a British term for youngster"
is a kind of juvenile, juvenile person
has parts: child's body
has particulars: bairn, buster, changeling, child prodigy, infant prodigy, wonder child, foster-child, foster child, fosterling, imp, monkey, rapscallion, rascal, scalawag, scallywag, scamp, kiddy, orphan, peanut, picaninny, piccaninny, pickaninny, poster child, kindergartener, kindergartner, preschooler, silly, sprog, bambino, toddler, tot, yearling, urchin, street child, waif

   A young person; a youngling; a lad. G. Eliot. [1913 Webster]

youngster, n. a child or young person.

N  infant, babe, baby, babe in arms, nurseling, suckling, yearling, weanling, papoose, bambino, kid, vagitus, child, bairn, little one, brat, chit, pickaninny, urchin, bantling, bratling, elf, youth, boy, lad, stripling, youngster, youngun, younker, callant, whipster, whippersnapper, whiffet, schoolboy, hobbledehoy, hopeful, cadet, minor, master, scion, sap, seedling, tendril, olive branch, nestling, chicken, larva, chrysalis, tadpole, whelp, cub, pullet, fry, callow, codlin, codling, foetus, calf, colt, pup, foal, kitten, lamb, lambkin, aurelia, caterpillar, cocoon, nymph, nympha, orphan, pupa, staddle, girl, lass, lassie, wench, miss, damsel, demoiselle, maid, maiden, virgin, hoyden, infantine, infantile, puerile, boyish, girlish, childish, babyish, kittenish, baby, newborn, unfledged, new-fledged, callow, in the cradle, in swaddling clothes, in long clothes, in arms, in leading strings, at the breast, in one's teens.