7

それは嘘なわけだが、

I don't understand. Does it say "it's a lie" or "it may be a lie"? I think I've read from a previous thread that な here is the equivalent of だ, but I'm stuck at わけ.

  • This may not be helpful in this case but the question on わけだ is one of the best ones on this site in my opinion. How to end a sentence in わけ – G-Cam Apr 18 '18 at 20:42
6

My dictionary says this type of わけ is used to confirm a (known) fact before diving into a main discussion. Context is missing, but I feel the speaker is trying to imply it's an obvious lie. So the nuance is something like "Of course it's a lie, but ..." or "As you know, it's a lie, but ..." Naturally, it may sound scornful if said referring to someone else's statement.

  • 知っての通り、我々の会社は赤字を出している訳ですけれども、…
  • ハハハ、まあ今言ったことは冗談な訳ですが、今から言うことは大事です。…
  • さて、今日は私の誕生日な訳だけど、プレゼントはどこ? まさか忘れたの?

な is an attributive form of copula だ. It typically appears before explanatory-の, もの, ので or のに. But in casual speech it's sometimes used before こと, わけ, 理由, 場合, etc.

  • 彼はもう大学生のだ。
  • 彼はもう大学生のに、マナーを知らない。
  • 彼が大学生ものか
  • 彼が大学生ことを知らなかった。 (大学生であること is better in formal settings)
  • 彼が大学生訳がない。 (大学生である訳/大学生の訳 is better in formal settings)
  • 大学生人 (nonstandard and highly informal, but occasionally heard instead of 大学生の人/大学生である人)
3

My dictionary says that this わけだ is the soft way of saying of だ that means "conclusion".

It means ""it's a lie". It is the equivalent of それは嘘だが, but the author would think it is a bit strong.

  • 1
    Could you explain (easily) why it is 嘘なわけ rather than 嘘というわけ or 嘘のわけ? The dictionaries I've looked through say that 嘘 is not a 形容動詞. If this requires a longer explanation or you'd rather someone else answer, I have no problem posting this as a separate question. Thanks. – G-Cam Apr 18 '18 at 20:46
  • 1
    Naruto"s answer would help you. – Yuuichi Tam Apr 19 '18 at 3:28
  • 1
    In addition, な is used in this usage like 彼女は大学生なわけよ. But when わけ is used as the meaning of "reason", の can be used like 彼女が大学生のわけ, though な is no problem. – Yuuichi Tam Apr 19 '18 at 4:21
0

It means "It's a lie."

I think I've read from a previous thread that な here is the equivalent of だ,

This isn't quite correct. You cannot substitute な for だ to end a sentence or following a -na adjective or noun preceding the と particle. In this case, わけ requires that its qualifying clause have an adjectivized suffix if it doesn't end in a verb (i.e. you need one if it ends in any kind of adjective or noun), so nouns end up following the pattern of -na adjectives and have a な suffix added.

So 嘘なわけ is the same in terms of grammar as saying 面白いわけ or 綺麗なわけ.

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