This is a rough way to say you strongly guess something. It's like asking "Isn't it true that...?" or saying "I bet..."
Verb [dictionary form] + んじゃねえかPrimary
い-Adjective + んじゃねえか
な-Adjective + な + んじゃねえか
Noun + な + んじゃねえか
This is a rough way to say you strongly guess something. It's like asking "Isn't it true that...?" or saying "I bet..."
おい、あいつ、こっちを見てるんじゃねえか？
Hey, isn't that guy looking over here?
あいつ、もうとっくに帰ったんじゃねえか。
I bet he went home a long time ago.
あいつ、本当は何も知らないんじゃねえか？
Isn't it the case that he actually doesn't know anything?
もしかして、これって全部罠なんじゃねえか。
Could it be... that this whole thing is a trap?
このままだと締め切りに間に合わねえんじゃねえかと思って、焦ってきた。
I started to panic, thinking 'at this rate, we're not gonna make the deadline, are we?'.
This ending sounds like 'nay'. It makes your speech very rough. It is often used for tough characters in stories. Using it in real life can sound rude.
This is different from "じゃねえか" (ja nee ka). "じゃねえか" shows surprise about a fact. "んじゃねえか" shows you are guessing. The "ん" part means you are explaining your guess. For example, "雨が降るんじゃねえか" means "I bet it will rain." "雨じゃねえか！" means "Hey, it's raining!"
Watch out: Do not mix up "~n ja nee ka" and "~n ja nee." "~n ja nee" means "Do not do it!" It is a strong command. "~n ja nee ka" asks a question. It means "Isn't it that...?" or "I bet that..." The small "ka" at the end changes the meaning a lot.
Use this when you suddenly understand something. You can also use it to strongly suggest an idea. It shows you really believe your idea is right.
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