強くなる

become stronger; grow more intense

→ 強い
phrase Uncommon #14,092
become stronger; grow more intense Used when a person or thing becomes physically or mentally stronger, or when wind, curiosity, emotions, and similar things become more intense. The adjective 強い changes to its adverbial form 強く before なる.
JA: 毎日練習すれば、もっと強くなるよ。
EN: If you practice every day, you will become stronger.

強くなる

Become stronger.

— ブレット・トレイン (2022)

だから強くなるんだ

That's why you become stronger.

— ブゴニア (2025)

情熱は年齢とともに弱くなる習慣は年齢とともに強くなる

Passion tends to fade with age, but habits grow stronger.

運動をする体が強くなる

Exercise makes your body stronger.

強くなるほど責任増す

The stronger you become, the more responsibility you bear.

— カンフーハッスル (2004)

研究すればするほど好奇心強くなるでしょう

The more you study, the more curious you will become.