Grammar › N2 · 08 Inference and judgment
〜のではないか: I wonder if; isn't it that
N2 · 08 Inference and judgment
Gently suggests that something may be the case.
Plain form + のではないか (spoken: んじゃないか). Used to give your own opinion or guess in a soft way. With a falling tone it is a guess; with a rising tone it asks for agreement. Polite form: 〜のではないでしょうか.
Examples
この計画は少し無理があるのではないでしょうか。
Isn't this plan a bit unrealistic?
彼はもう会社を辞めたんじゃないかと思う。
I think he may have already quit the company.