食べなきゃダメ

have to eat

→ 食べる
phrase Rare #44,316
have to eat A conversational way to say 食べなければダメ, literally “if you don’t eat, it’s no good.” In a question, it means “Do I have to eat?”
JA: 薬を飲むなら、何か食べなきゃダメ。
EN: If you’re going to take the medicine, you have to eat something.

食べなきゃダメだ。

I have to eat.

これ食べなきゃダメ?

Do I have to eat this?

どうしても食べなきゃダメ?

Do I really have to eat it?

— 魔女の宅急便 (1989)

それに何か食べなきゃダメね

Besides, I have to eat something.

— 魔女の宅急便 (1989)