You use this to guess something. You also use it to ask if someone agrees with your guess. It is a very casual way to speak.
Clause + んじゃね？Primary
You use this to guess something. You also use it to ask if someone agrees with your guess. It is a very casual way to speak.
あいつ、もう来ないんじゃね？
That guy's not coming anymore, is he? / I bet he's not coming.
今日のライブ、結構良かったんじゃね？
Today's concert was pretty good, wasn't it?
これ、もう終わらせてもいいんじゃね？
Don't you think it's fine to just be done with this now?
「あいつがリーダーなんじゃね？」って、みんな思ってるよ。
Everyone's thinking, 'He's the leader, isn't he?'
あの店、昔は結構有名だったんじゃね？
That shop was pretty famous back in the day, wasn't it?
This is different from "~nja nai?" That one is more neutral. This one is very casual and sounds rough or masculine. It is also different from "~ja ne?". The "n" part means you are guessing based on what you see.
Don't use this when you need to be polite. For example, don't say this to your boss. This pattern connects to the plain form of the word before it. For "na"-adjectives and nouns, when you talk about the present and it's positive, you add "なんじゃね?". For example, "元気なんじゃね?" (You're healthy, aren't you?). For all other cases, like past tense or negative, you just add "んじゃね?". For example, "行くんじゃね?" (You're going, aren't you?).
Use this when you want to suggest an idea to friends. You are asking them if they agree. It's like saying, 'How about we...?' or 'Don't you think we should...?'
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More formal alternatives(1)
Less formal alternatives(4)
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