Amateur

訓：　う＊れる：　 to ripen (used of plants or fruits)(which are plants).
熟語：
未熟な：みじゅくな： ｎｏｔ　ｙｅｔ　ｇｏｏｄ　ａｔ　ｓｏｍｅｔｈｉｎｇ．

成熟　せいじゅく: to mature. (emotional maturity, a mature orca whale eats 1,000 dogs a day, etc.) (also used of nubile humans).