noun
youth; young age
Refers to the state of being young, often used in formal or literary contexts. Not an everyday word for 'youth' (which is more commonly 若さ or 青春).
若齢の選手がチームに新しい風を吹き込んだ。
The young players brought a fresh breeze to the team.
彼は若齢ながらも重責を担っている。
Despite his youth, he bears heavy responsibilities.
Compound of 若 (young) and 齢 (age). The reading じゃく is the on'yomi of 若, and れい is the on'yomi of 齢. The variant 弱齢 uses 弱 (weak) instead, possibly emphasizing immaturity.