買っちゃった

ended up buying

→ 買う
買っ buy + ちゃっ Completive (often regretful or accidental) + Past tense
verb · past indicative Rare #26,056
ended up buying Colloquial contraction of 買ってしまった; often implies regret or that the purchase was unplanned.
JA: 欲しかった靴を、つい買っちゃった。
EN: I ended up buying the shoes I wanted on impulse.
Conjugation of 買う

また要らないもの買っちゃった

I bought something I didn’t need again.

実は自分用に買っちゃった

Actually, I ended up buying it for myself.

必要以上の切手を買っちゃった

I bought more stamps than I needed.

お金ないんだけど買っちゃった

I don’t have any money, but I went ahead and bought a car.

今日はリンゴセールしてたからいっぱい買っちゃった

Apples were on sale today, so I ended up buying a lot.

どうしてまたこんな高い辞書を買っちゃった

Why did you go and buy such an expensive dictionary again?

お金ないのにまた買っちゃった

I bought another book even though I’m broke.

新しいカメラ買っちゃった

I ended up buying a new camera.