Intransitive verb and Godan verb
なる
取りこし苦労だよ。成るように成るさ。
You're worrying for nothing. What will be, will be.
日食を直に見てしまったため、目が不自由に成りました。
I'm visually impaired because I looked directly at an eclipse.
うわーー！！コウイチがとうとうアメリカ大統領に成ったよ。「為せば成る。為さねばならぬ何事も、成らぬは人の為さぬなりけり」だね！
Oh my God! Koichi finally became the President of the United States! Where there's a will, there's a way!
This word consists of kanji with hiragana attached. Because the hiragana ends with an う sound, you know this word is a verb. The kanji itself means become so the vocab verb version would be to become.
Since this word consists of a kanji with hiragana attached, you can bet that it will use the kun'yomi reading. You didn't learn that reading with this kanji, so here's a mnemonic to help you: You are starting to become something else. You're transforming, but you're not sure what it is. First, you get fins... uh oh, something in the water. Then, you gain a tail and rubbery skin... hmm, something sea mammal-like. Oh, and then a huge horn flies out of your nose. You are going to become a narwhal (な).