じゃありませんか

isn't it?

→ だ
phrase Rare #22,271
isn't it? A polite negative question used to seek agreement or confirmation. It is a conversational form of ではありませんか.
JA: この映画、おもしろいじゃありませんか?
EN: This movie is interesting, isn't it?

またこんな所にいいじゃありませんか

Here again, in a place like this. Isn’t it nice?

— かぐや姫の物語 (2013)

私のお金を少しあげたじゃありませんか

I did give you some of my money, didn't I?

そうじゃありませんか

Isn't that so?

— 別れる決心 (2022)

中国料理好きじゃありませんか

Don't you like Chinese food?

そんなの身体にとっていいはずがないじゃありませんか

That can't possibly be good for your body.