youngster; young person; immature person
Refers to a young person, often with a nuance of inexperience or immaturity. The reading じゃくねんもの is less common and may carry a slightly more colloquial or dated feel.
The unemployment rate among young people is high.
He's still a youngster, so his judgment is naive.
Standard kanji form using 若 (young).
Variant using 弱 (weak); less common than 若年者.
Compound of 若年 (jakunen, 'young age') + 者 (sha, 'person'). The reading じゃくねんもの uses the native Japanese suffix 者 (mono) instead of the Sino-Japanese 者 (sha).