Synonyms to immature

abortive, barren, bootless, failed, failing, fruitless, futile, gainless, ineffective, ineffectual, inefficacious, lame, manque, miscarried, miscarrying, nonremunerative, of no effect, otiose, profitless, rewardless, sterile, stickit, stillborn, successless, unavailable, unavailing, unformed, unfortunate, unmatured, unproductive, unprofitable, unremunerative, unrewarding, unripe, unsuccessful, useless, vain, adolescent, at half cock, baby, callow, fledgling, green, half-baked, half-cocked, half-grown, hopeful, ill-digested, impubic, infant, junior, juvenal, juvenile, maturescent, minor, nubile, pubescent, raw, sapling, slip, sprig, stripling, teenager, teener, teenybopper, underripe, unfledged, ungrown, unmellowed, unseasoned, young hopeful, young person, younger, youngest, youngling, youngster, youth, adulterated, airy, attenuate, attenuated, blemished, cut, damaged, defective, deficient, dilute, diluted, erroneous, ethereal, fallible, faulty, fine, flimsy, found wanting, gaseous, impaired, imperfect, imprecise, impure, inaccurate, inadequate, incomplete, inexact, insubstantia