JLPT N2 grammar
〜わけだ — Meaning & Examples
"No wonder / that's why / it follows that." Draws a logical conclusion from new evidence. 寒いわけだ = no wonder it's cold. Often paired with 道理で (douride).
〜わけだ — "No Wonder / That's Why"
わけだ draws a logical conclusion from evidence. You've just learned something, and it explains a fact you already noticed.
Pattern: [plain form] + わけだ
3年も日本に住んでいたのか。道理で日本語がペラペラなわけだ。
= You lived in Japan for 3 years? No wonder your Japanese is fluent.
外は雪が降っているのか。寒いわけだ。
= It's snowing outside? No wonder it's cold.
みんな帰ったの？じゃあ、静かなわけだ。
= Everyone went home? Ah, that's why it's quiet.
Often paired with 道理で (douride) = "no wonder":
道理で〜わけだ is a very natural combination.
わけだ can also mean "so in other words / it works out that":
1ドル150円だから、1万円は約66ドルになるわけだ。
= At 150 yen to the dollar, 10,000 yen works out to about 66 dollars.
Key feeling: A satisfying "ah, that explains it!" — connecting a cause you just discovered to an effect you already knew.
Practice questions
Try these 3 questions on 〜わけだ. Pick an answer in your head, then open “Show answer”.
1. Which pattern means "no wonder / that's why"?
- わけにはいかない (wake ni wa ikanai)
- わけではない (wake de wa nai)
- わけがない (wake ga nai)
- わけだ (wake da)
Show answer
Answer: わけだ (wake da)
わけだ draws a logical conclusion: 道理で寒いわけだ = no wonder it's cold. You connect new evidence to a fact you already noticed.
2. "It's not that I dislike it, but..." uses?
- 嫌いなわけではない (kirai na wake de wa nai)
- 嫌いなわけだ (kirai na wake da)
- 嫌いなわけがない (kirai na wake ga nai)
- 嫌いなわけにはいかない (kirai na wake ni wa ikanai)
Show answer
Answer: 嫌いなわけではない (kirai na wake de wa nai)
わけではない = partial denial. 嫌いなわけではない = it's not (necessarily) that I dislike it. Softens an assumption.
3. "There's no way he'd say that" is?
- 言うわけだ (iu wake da)
- 言うわけではない (iu wake de wa nai)
- 言うわけがない (iu wake ga nai)
- 言うわけにはいかない (iu wake ni wa ikanai)
Show answer
Answer: 言うわけがない (iu wake ga nai)
わけがない = strong impossibility. 彼がそんなことを言うわけがない = there's no way he'd say that.
Practise 〜わけだ in the free app
This point is part of the “The わけ Family — Logic and Conclusions” lesson in A Star Japanese. Study it with examples, a quiz, flashcards and timed JLPT N2 mock exams. Free on iPhone and Android.
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Related N2 grammar points
From the same lesson: The わけ Family — Logic and Conclusions
Frequently asked questions
What does 〜わけだ mean?
"No wonder / that's why / it follows that." Draws a logical conclusion from new evidence. 寒いわけだ = no wonder it's cold. Often paired with 道理で (douride).
Is 〜わけだ on the JLPT N2 test?
〜わけだ is taught in the JLPT N2 grammar course in A Star Japanese (lesson “The わけ Family — Logic and Conclusions”), so it is a pattern learners at this level are expected to recognise. The JLPT does not publish an official grammar list, so treat this as a study guide rather than an official requirement.
How can I practise 〜わけだ?
Open the “The わけ Family — Logic and Conclusions” lesson in the free A Star Japanese app for iPhone and Android. It has examples, a quiz after every lesson, flashcards with spaced repetition and timed JLPT N2 mock exams, with no ads.