Structure
Verb + の(1) + ではない(2)(だろう)か
[い]Adjective + の(1) + ではない(2)(だろう)か
Noun + (なの(3))+ ではない(2)(だろう)か
[な]Adjective + (なの(3))+ ではない(2)(だろう)か
(1) ん
(2) じゃない
(3) なん
Details
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Standard
About のではないだろうか
のではないだろうか is a fairly long grammar pattern in Japanese that is used when one wants to express their opinion indirectly, in the form of a rhetorical question. Common translations include 'I think it's (A), isn't it?', and 'it might be that (A)'. However, being that this is just a combination of の, ではない 'isn't', だろう 'probably', and か, the literal meaning is simply 'is it probably not that it's (A)'. Just like in English, the elongation of the phrase and not saying anything with certainty makes it sound more modest.
のではないだろうか may be seen following verbs and い-Adjectives, or な-Adjectives and nouns when preceded with な. Additionally, でしょう may replace だろう.
This phrase can also be used when seeking agreement from the listener, or when mildly trying to persuade them that your way of thinking may be correct.
Synonyms
Examples
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彼はもしかして、あきれているのではないだろうか。
I think that he is probably amazed, isn't he? (don't you agree?)
あそこに見えるのは、虹ではないだろうか。
I think the thing you can see over there is a rainbow, isn't it? (don't you agree?)
この症状、伝染病ではないだろうか。
With these symptoms, I think it's a contagious disease, isn't it? (don't you agree?)
この調子だと、停電が長引くのではないだろうか。
At this rate, I think the blackout will drag on, won't it? (don't you agree?)
こんなお願いをしてしまって、厚かましかったのではないだろうか。
I think it was pretty bold/shameless to make a request like this, don't you agree? (isn't it?)
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のではないだろうか?
NihongoDayByDay
Difference between だろうか and ではないだろうか
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Tobira
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[AIAIJ] An Integrated Approach to Intermediate Japanese
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のではないだろうか – Grammar Discussion
Most Recent Replies (3 in total)
wrt7MameLZE33wlmpCAV
The structure details for this grammar point
Noun + (なの(3))+ ではない(2)(だろう)か (2) じゃない (3) なん
indicate nouns can be inflected with なの・なん, but this doesn’t appear to be reflected in the examples, nor accepted in any of the answers I’ve encountered so far. I already reported this previously, but thought I should post here as well to bring attention to this discrepancy.
Fuga
Hey @wrt7MameLZE33wlmpCAV !
Sorry for the late response! We have just fixed this so that those answers are accepted!
OctopusEvening
This still appears to be the case or am I doing something wrong?
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