Synonyms and related words :
a bit previous, adolescent, advanced, amateur, amateurish, at half cock, callow, dabbling, dilettante, dilettantish, far ahead, fledgling, forward, green, half-assed, half-baked, half-grown, hasty, ill-considered, ill-digested, immature, impubic, impulsive, juvenile, not firm, overhasty, oversoon, precipitate, precocious, premature, previous, raw, rushed, sciolistic, shallow, smattering, sophomoric, superficial, too early, too soon, uncrystallized, underripe, unfledged, ungrown, unjelled, unmatured, unmeditated, unmellowed, unpremeditated, unprepared, unripe, unseasoned, untimely