Synonyms For "Young" :
1 syllable:
2 syllables:
boyish, boylike, childlike, childly, early, girlish, junior, little, newborn, offspring, preteen, teenage, teenaged, tender, untried, vernal, youngish, youthful
3 syllables:
immature, infantile, puppyish, puppylike, schoolboyish, schoolgirlish, unseasoned, untested