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I can't come up with an example right now. But hypothetically let's say there was a word that was ka. And they combined it with ku to make a new word. then it'd become kagu instead of kaku. It usually gets softened like that. Why is that?

marked as duplicate by naruto, macraf, Dono, Chocolate, l'électeur Dec 22 '17 at 11:50

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  • A good example for this would be a word like 口{くち}becoming softened when joined with 入{い}り to form 入{い}り口{ぐち} – psosuna Dec 21 '17 at 21:31
  • You'll like this answer: japanese.stackexchange.com/a/48895/22352 – ajsmart Dec 21 '17 at 23:07

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