Pronunciation of 大罪


There's a Japanese manga/anime series called [Nanatsu no taizai (七つの大罪,
)](https://en.wikipedia.org/wiki/The_Seven_Deadly_Sins_\(manga\)), which is
pronounced as

> ななつのたいざい

as one can clearly hear in [this intro](https://youtu.be/wqEkSBiB2lo?t=25) or
see in its [Wikipedia
page](https://ja.wikipedia.org/wiki/%E4%B8%83%E3%81%A4%E3%81%AE%E5%A4%A7%E7%BD%AA_\(%E6%BC%AB%E7%94%BB\)).

However, the word 「大罪」is pronounced as「だいざい, as I've found in both a
[dictionary](https://jisho.org/search/%E5%A4%A7%E7%BD%AA) and [Wikipedia page
for cardinal
sins](https://ja.wikipedia.org/wiki/%E4%B8%83%E3%81%A4%E3%81%AE%E5%A4%A7%E7%BD%AA).

Why is the pronunciation in the show different?




たいざい is just an alternative reading of 大罪, and is listed perhaps in all decent
monolingual dictionaries.

  * [デジタル大辞泉](https://dictionary.goo.ne.jp/jn/133167/meaning/m0u/) and 明鏡国語辞典 treat たいざい as the primary reading and だいざい as an alternative.
  * [大辞林](https://www.weblio.jp/content/%E5%A4%A7%E7%BD%AA) treats だいざい as the primary reading.




たいざい is just an alternative reading of 大罪, and is listed perhaps in all decent
monolingual dictionaries.

  * [デジタル大辞泉](https://dictionary.goo.ne.jp/jn/133167/meaning/m0u/) and 明鏡国語辞典 treat たいざい as the primary reading and だいざい as an alternative.
  * [大辞林](https://www.weblio.jp/content/%E5%A4%A7%E7%BD%AA) treats だいざい as the primary reading.

