room for growth; potential; promise
Used for people, skills, products, or businesses that still have untapped potential or capacity to improve. Often appears in contexts like 伸びしろがある (has room to grow) or 伸びしろが大きい (has great potential).
彼はまだ若いから、伸びしろがたくさんある。
He's still young, so he has a lot of room for growth.
この製品にはまだ伸びしろがあると思う。
I think this product still has potential.
Common mixed kanji-kana spelling.
Kanji spelling using 代 for 'margin/allowance'. Less common than 伸びしろ.
Compound of 伸び (nobi, 'stretching, growth') and しろ (shiro, 'margin, allowance'). The しろ is often written in kana, but the kanji 代 can be used with the meaning of 'substitute' or 'allowance'.