Roget's Thesaurus: Entry 129 (Infant)

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#129. Infant.-- 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[obs]; elf. youth, boy, lad, stripling, youngster, youngun, younker[obs], callant[obs], whipster[obs], whippersnapper, whiffet [obs][U.S.], 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[obs]; aurelia[obs], caterpillar, cocoon, nymph, nympha[obs], orphan, pupa, staddle[obs].

girl; lass, lassie; wench, miss, damsel, demoiselle; maid, maiden; virgin; hoyden.

Adj. infantine[obs], 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.