at half cock, baby, callow, fledgling, green, half-baked, half-cocked, half-grown, hopeful, ill-digested, immature, impubic, infant, junior, juvenal, juvenile, maturescent, minor, nubile, pubescent, raw, sapling, slip, sprig, stripling, teenager, teener, teenybopper, underripe, unfledged, ungrown, unmellowed, unripe, unseasoned, young hopeful, young person, younger, youngest, youngling, youngster, youth