To Apologize
godan verb
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 apologize so the verb vocab version is to apologize.
あやまる
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: When you say you're sorry to apologize, you'd probably start with: "I am (あやま) sorry!"
自分がしたことじゃないのに謝るつもりはないよ。
I refuse to apologize for something I didn’t do.
コウイチちゃんに今すぐ謝りなさい！
Apologize to Koichi right now!
いや、何でお前が謝るんだよ。謝らなくていいよ。
No, why are you apologizing? You don't need to apologize.