noun
youngster; greenhorn; neophyte
Derogatory term for a young, inexperienced person, often used by older people to belittle someone younger.
あの若造にはまだ任せられない。
I can't entrust that to that greenhorn yet.
若造のくせに生意気だ。
He's just a youngster, but he's so cheeky.
Compound of 若 (waka, 'young') and 造 (zō, a suffix for a person, often with a derogatory nuance). The exact derivation of the suffix is uncertain, but it may be related to 造る (tsukuru, 'to make'), implying someone 'made' or 'fashioned' in a certain way.