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Furthermore, are there any other words that retained their larger, pronounced
つ when this change occurred?

Edit: 仏像 seems to be another one.
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2022-02-26T18:44:33.447
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2022-02-27T08:16:04.057
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question
words history style
Why did 実在 retain its old form when the 促音 was introduced?
It's because 在 (ざい) starts with a voiced sound (z). You usually don't see a
sokuon before voiced sounds, except in gairaigo.
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2022-02-26T20:26:53.677
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2022-02-26T20:34:02.897
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answer