JLPT N2

～ではないだろうか

Isn't it that...? / Don't you think that...?

Structure

Sentence (plain form) + のではないだろうか / Sentence (plain form) + ではないだろうか

How it works

～ではないだろうか is used to express the speaker's opinion or thought as a question, seeking agreement or gently suggesting a point. It's a way to present a viewpoint without being overly assertive.

Examples

この計画はもっと検討する必要があるのではないだろうか。

Don't you think this plan needs more consideration?

Common mistakes

Using it as a simple factual question; it is more about expressing an opinion or gentle suggestion.

Tip

It's like saying 'Perhaps it's X?' or 'Wouldn't you agree that X?'

More JLPT N2 grammar

に伴いにかけてにかわってにもかかわらずに限りに限らずをはじめを中心に

See ～ではないだろうか in real Japanese

Import an article and tap any sentence using it. The explanation comes back about the sentence in front of you, not a textbook example.

Try InputDojo free