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食べちゃ

eat up, end up eating

→ 食べる
食べ eat + ちゃ Prohibitive (contraction of ては)
verb · potential Rare #37,532
eat up, end up eating Colloquial contraction of 食べてしまう, often followed by う or った; it can express completion, regret, or an unintended action.
JA: ケーキを全部食べちゃった。
EN: I ate the whole cake.
Conjugation of 食べる

その魚は生で食べちゃ駄目だったんだよ。

You weren't supposed to eat that fish raw.

食べちゃだめ.

Don’t eat it.

— もののけ姫 (1997)

あんなにたくさんアイス食べちゃ駄目だったんだよ。

You shouldn't have eaten that much ice cream.

食べちゃだめ！

Don't eat it!

— レミーのおいしいレストラン (2007)