This is a casual way to ask someone to do something. It is like saying 'Why don't we...?' or 'Do you want to...?'
Verb [ない-form]？Primary
This is a casual way to ask someone to do something. It is like saying 'Why don't we...?' or 'Do you want to...?'
この後、一緒に映画でも見に行かない？
After this, why don't we go see a movie or something together?
この問題について、もう一度みんなで話し合わない？
Regarding this issue, why don't we all discuss it one more time?
新しいレシピを試してみない？面白そうだよ。
Why don't we try a new recipe? It looks interesting.
もう無理しない？疲れてるみたいだよ。
Why don't you stop pushing yourself? You look tired.
昔みたいに、たまには二人で食事に行かなかった？って彼に言われた。
He said to me, 'Why don't we go out for a meal just the two of us once in a while, like we used to?'.
This way of asking is like a gentle nudge. It lets the other person say no easily. You are not pushing them to say yes.
This is different from 〜ませんか. That is more polite. It is also different from 〜ましょう. That sounds like you are telling someone what to do. This is a softer way to ask.
Use this when you want to ask someone to do something. It is a friendly way to suggest an idea. You can also use it to invite someone to do something with you.
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