Yap.Town

なるだろう

will probably become

→ 成る
phrase Rare #37,179
will probably become なる means “become” or “turn out”; だろう expresses a prediction or likelihood, often translated as “probably” or “I suppose.”
JA: 明日は暖かくなるだろう。
EN: It will probably get warmer tomorrow.

すぐ明るくなるだろう。

It'll be light soon.

その経験はあなたのためになるだろう。

That experience will benefit you.

これでしばらくはなんとかなるだろう

This should get us by for a while.

— ロシアン・ブラザー (1997)

まあそうなるだろうな

Well, I suppose that was bound to happen.

— 罪人たち (2025)