The is a certain way of talking where you can end just about anything you say in わけ.

What is the sentence structure for this way of talking?

2 Answers 2


While sawa's answer does cover the basic construction rules, it's definitely worth it to go over the different use cases of わけ. Grab a comfy chair and your favorite beverage, because this is a long one.

The best and most complete analysis I've found of this use of わけ is in this 2001 paper by Atsuko Yokota:

文末【ぶんまつ】表現【ひょうげん】「わけだ」の用法【ようほう】 : 「はずだ」「ことになる」との比較【ひかく】

It's freely available as a PDF (yay!) but it's entirely in Japanese (hrm), so the best I can give you here is a summary of the five (yes, five) distinct uses of わけだ which Yokota lists.

Yokota's Differentiation of わけだ

Diagrammatically, Yokota charts out the first four uses of わけだ in her paper. Here is a clarified and prettified version:

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1. Marks a logical conclusion or result based on some known fact

The common thread in this type of sentence is that a known fact Y is used as the logical basis for a conclusion Z:


Y (known): The water is really rough today, isn't it?

Z (conclusion): As a result, will we not be able to put out to sea today?


Y (known): The time difference is four hours, so

Z (conclusion): based on this we'll arrive right at noon Japan time.


Y (known): When I weighed myself I was at 52 kilos. Last week I was 49 kilos, so

Z (conclusion): this means I gained a whole three kilos in one week.

2. Marks a reason or cause for some matter

This is like the first use, only in the opposite direction. We take some known fact Y, and use わけ to mark X, the reason for or cause of Y:


Y (known): It's quiet in the school, isn't it?

X (reason): Ah, it's because we're in winter break now, right?


Y (known): This year's rice crop was poor.

X (reason): This is due to the cool summer we had.


Y (known): See how the water is really rough?

X (reason): It's because there's a typhoon approaching.

3. Marks the speaker's acceptance/acknowledgement of some truth

This is a little more complicated than the first two uses. Essentially, we again start with some known fact Y (which may be unspoken). An answer for why Y is true is presented as X, and this leads to the conclusion that X naturally yields Y:


Y (known, unspoken): You are fluent in French.

X (why is Y true?): You were in France through junior high?

Y (acknowledged): No wonder you're fluent in French. (acknowledging that X naturally yields Y)


Y (known): It won't open. (Listener: Why not?)

X (why is Y true?): The keys are different. (Listener: Ah, so that's why.)



Y (known by wife, unspoken): Mr. Suzuki is at home even during the middle of the day on weekdays.

X (why is Y true?): Husband: I heard that Mr. Suzuki next door resigned from his job.

Y (acknowledged): Wife: Ah, so that's why he's at home even during the middle of the day on weekdays.

4. Marks a restatement of some fact

This is one of the simplest uses of わけ. Here, a known fact Y is restated or presented from a different angle as Yʹ. Often you'll find this use of わけ paired with つまり:


Y: Her father is my mother's younger brother.

Yʹ: In other words, she and I are cousins.

山田【やまだ】さんは韓国【かんこく】の領事館【りょうじかん】勤務【きんむ】になった。つまり彼【かれ】は出世【しゅっせ】したわけだ。 (example adapted from this page)

Y: Mr. Yamada got a job at the South Korean consulate.

Yʹ: Essentially, he's moved up in the world.

5. Does something entirely untranslatable

Unfortunately, there has to be a catch-all category, since わけ gets used kind of like a sentence-final particle without any significant effect on the meaning of the sentence. Even Yokota admits that "speakers often use [わけ in this way] unconsciously."


And so the two married and lived happily.

This わけ doesn't fit nicely into any of the four preceding categories. You might think it falls under #1 (a conclusion based on some known fact), but this sentence isn't a conclusion of anything; it's merely a statement of some known fact, without any connection. We could, in fact, remove わけ entirely, without affecting the meaning, by replacing 暮【く】らしたわけです with 暮【く】らしました.

Inside this category is the use of わけ to set up a context or prologue for a succeeding statement. We find ~のだ being used in a similar way:


I specialize in history, and from the standpoint of someone like me who handles literature, I think we should value historical sources more.

Here, わけ marks a prologue ("I specialize in history") and provides the foundation for the following statement: it informs the listener of how qualified the speaker is to make such a statement. わけ could be replaced by の (ん) in this example.

Forming Sentences with わけだ

The rules for わけ follow the normal rules for forming a subordinate clause before a noun: the clause must end in a plain form, with the exception that (plain present) な-adjectives connect to わけ with な, and (plain present) nouns can connect with either な or (less commonly) の:





Often the speaker will use という to "wrap up" the preceding clause (or sentences) and use it to modify わけ (というわけだ). This doesn't change the usage, and the rules for using という are the same as those for the use of と to mark a quote or thought. This use of という is often used at the beginning of a sentence as a transition:


So with that, …

This is especially common in TV or radio shows when the host needs to press the show forward or move on to the next topic. The という wraps up the preceding statements into わけ and essentially means, "Now that all this has been said, let's move on." というわけで has the following colloquial forms:

ちゅうわけで (a slur of というわけで)

てなわけで (using て for という, but as to where the な comes from, your guess is as good as mine)

ということで is also used as a transition with a meaning similar to というわけで.

Negative Forms of わけ

There are at least four negative forms of わけ, each with slightly different meanings. One is using わけだ after a negative clause, which shows up in the examples here. This answer is getting too long to cover these, so I will simply list the other three here and wait for those interested in more complete explanations to ask a question:

  • ~わけがない: There's no way that ~
  • ~わけではない: It's not as though ~
  • ~わけにはいかない: It's not possible to ~
  • 1
    @phirru: Part of the analysis in the paper I linked makes note of when you can replace each of the five uses of わけだ with either はずだ or ことになる (which can be very close to ということだ). There's a table in the conclusion that summarizes when these substitutions are allowed, but unfortunately there are many exceptional cases within each usage of わけだ (such as whether the clause marked by わけだ is unknown, known, or an unconfirmed past event), so the only way to fully explain the difference would be to translate the entire paper. Commented Jul 28, 2011 at 2:50
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    @sawa: Duly noted. But since language hacker's question included the statement that there is "a certain way of talking where you can end just about anything you say in わけ", I deduced that the OP, in addition to wanting to know how to construct such sentences, is in fact unclear on why and how one would use わけ. (I also know from past teaching experience that this is a particularly tricky bit of Japanese for non-natives to learn, so I imagine many others on this site will benefit from a thorough explanation.) Commented Jul 28, 2011 at 2:55
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    Derek, this is a great summary of the paper and will no doubt be helpful to people looking for info on わけ in general, but my interpretation of the question was that language hacker was asking about the common colloquial use of "category 5" in particular, where わけ appears like a sentence-final particle [specifically NOT followed by だ] affecting implication/discourse structure more than meaning. Maybe it would be nice to throw a note at the top covering that specific colloquial usage before diving in to the full story?
    – Matt
    Commented Jul 28, 2011 at 3:07
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    @William: Using わけ to give a conclusion (Y→Z) requires some level of objectivity. In other words, given the evidence, anyone could form the conclusion marked by わけ. This objectivity is not present in the example sentence you're referring to, since the preceding context (whatever it is) does not always lead to the logical conclusion that the two married and lived happily. It is a mere statement of fact known only to the speaker. This is why わけ can be left out without affecting the meaning, which is what Yokota was getting at in her paper. Commented Jul 28, 2011 at 12:25
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    @Derek Schaab: In my grammar book this is explained as follows: "In casual conversation wake, an informal form of wake da, is used quite frequently to give slight emphasis to a fact when the speaker does not expect the hearer to know about it.". Which I think sums it up quite nicely.
    – phirru
    Commented Jul 28, 2011 at 13:37

わけ is a noun meaning 'reason', but it might be better translated as 'circumstances' as Matt comments. When you put it at the end of a sentence, you are turning that sentence into an appositive clause modifying わけ. When the predicate is an adjectival noun (also called na-adjective), you need to change the ending into the adnominal ending (-な). A word for word translation will be "(there is) reason that...", or "the circumstances were that...".

In actual usage, it does not mean much, but is used when you want to establish intermediate steps for explaining something.

'He was there.'
'{Reasonably/The circumstances were that/Now/Actually}, he was there.'

'He is quiet.'
'{Reasonably/The circumstances were that/Now/Actually}, he is quiet.'

  • 3
    Might it be better to view the わけ in this case as having a meaning closer to English "circumstances" than "reason"? e.g. 彼がそこのいたわけ = "(The circumstances were that) he was there" The meaning (he was there) is the same, but the implication as a speech act is different. (Here I tend to agree with your explanation that it used as an intermediate step in an explanation; you are not just observing that he was there, but setting the scene in which his being there has bearing on what is to happen next.)
    – Matt
    Commented Jul 27, 2011 at 23:10

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