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This article <https://mainichi.jp/articles/20210920/k00/00m/040/036000c>
contains the quote

「年なんだから無理」

which I understand to mean

_" The difficulties presented by your age are why it is impossible"_

How does one parse this sentence? Like this?

年【とし】age

難【なん】 (n,n-suf) difficulty; trouble; hardship

だから=です+から

無理【むり】impossible
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2021-09-23T08:15:50.133
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question
readings parsing
「年なんだから無理」How does one parse this colloquial sentence?
年 by itself can mean _old age_. From
[goo辞書](https://dictionary.goo.ne.jp/word/%E5%B9%B4_%28%E3%81%A8%E3%81%97%29/#jn-158729)

> 人生の盛りを過ぎた年齢。老齢。

なんだ is a form of なのだ, essentially the same as だ.

  * [Origin of the usage of な in ~なんだ](https://japanese.stackexchange.com/questions/66524/origin-of-the-usage-of-%E3%81%AA-in-%E3%81%AA%E3%82%93%E3%81%A0)
  * [コトバンク entry for なのだ](https://kotobank.jp/word/%E3%81%AA%E3%81%AE%E3%81%A0-589358)

Thus 年なんだから無理 means _Because (the woman is (too)) old, (her project is)
impossible_.
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Sundowner's answer is good.

To build on that, I'd like to note that なのだ adds a sense of explanation that
is missing from just だ. Whereas だ is basically just _" [it] is"_, なのだ is
perhaps closer to _" it is **because** [it] is"_. [This other
post](https://japanese.stackexchange.com/questions/66524/origin-of-the-usage-
of-%e3%81%aa-in-%e3%81%aa%e3%82%93%e3%81%a0/66541#66541) takes a deep dive
into this structure in terms of grammar and meaning. [This other (shorter)
post](https://japanese.stackexchange.com/questions/82641/what-
is-%e3%81%aa-%ef%bd%93function-in-this-sentence/82649#82649) contrasts the
change in sense between です and （な）のです.
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answer