Japanese grammar
What does ～でなくてなんだろう mean? Japanese grammar N1
～でなくてなんだろう means what else could it be but… (rhetorical emphasis).
| Level (estimated, JLPT framework) | N1 |
|---|---|
| Structure | N + でなくてなんだろう N + でなくてなんであろうか |
| Romaji | denakutenandarou |
| Meaning | what else could it be but… (rhetorical emphasis) |
Forming it
| Noun (concept) | 愛 + でなくてなんだろう |
|---|---|
| Noun (judgment) | 奇跡 + でなくてなんだろう |
How to use it
A rhetorical question that strongly asserts "this truly is...". Written style, richly emotional.
- 「～でなくてなんだろう」 is a RHETORICAL QUESTION: asking "if not A, then what?" to strongly assert "this truly is A".
- The noun is usually an emotionally rich abstract concept: 愛・奇跡・運命・偶然.
- Written style (essays, commentary); not used in everyday conversation.
Examples
見ず知らずの人に命を救われた。これが奇跡でなくてなんだろう。
A stranger saved my life. If this isn’t a miracle, what is?
見返りを求めず尽くすこと、それが愛でなくてなんだろう。
Giving without expecting anything back — if that isn’t love, what is?
Keep in mind
- Attaches to an abstract noun.
- This is an assertion, not a genuine question.
Common mistakes
-
Wrongこれがペンでなくてなんだろう。
If this isn't a pen, what is it.
Correctこれが奇跡でなくてなんだろう。
This pattern is used with an emotionally rich ABSTRACT concept — not for a mundane, concrete object.
-
Wrongこれが奇跡でなくてなんだろうか、教えてください。
If this isn't a miracle, then what is — please tell me.
Correctこれが奇跡でなくてなんだろう。
This is a RHETORICAL question (self-affirming), not a question awaiting an answer.
Exam tips
- 「でなくてなんだろう」 = a rhetorical question asserting "this truly is A"; used with abstract concepts.