What does かぱんと mean in this sentence?


From 《君の名は。 (角川つばさ文庫) (新海 誠;ちーこ)》,

> かぱんと / か [Usage-1/All]
>
>   1. 2020-10-23 11:53:30 と思いつつ私はかぱんと炊飯器を開け、ぴかぴかした白飯を自分の茶碗に盛りつける。
>

I originally thought this sentence meant:

> I open the bread and rice cooker, and scooped up the delicious looking rice
> into my bowl.




This is a case of onomatopoeia/擬音語【ぎおんご】 being used as an adverb. かぱん here
illustrates the sound of the rice cooker as it opens. If you look it up on
[Jaded
Network](http://thejadednetwork.com/sfx/search/?keyword=%E3%81%8B%E3%81%B1%E3%82%93&submitSearch=Search%20SFX&x=),
it tells you it is the sound of "something opening". The sentence doesn't
exactly sound natural in english, but this is a more literal translation:

> 私はかぱんと炊飯器を開け  
>  I opened the rice cooker with a "kapan" sound.

A lot of onomatopoeic words are used this way and can be used adverbially.
Here are some more examples:

> 雨がザーザー降っている。  
>  It is raining with a "zaa zaa" sound.  
>  Natural translation: It is raining cats and dogs.

> ばたんと閉める。  
>  To shut with a bang.

> ぐつぐつ（と）煮る。  
>  To simmer.




This is a case of onomatopoeia/擬音語【ぎおんご】 being used as an adverb. かぱん here
illustrates the sound of the rice cooker as it opens. If you look it up on
[Jaded
Network](http://thejadednetwork.com/sfx/search/?keyword=%E3%81%8B%E3%81%B1%E3%82%93&submitSearch=Search%20SFX&x=),
it tells you it is the sound of "something opening". The sentence doesn't
exactly sound natural in english, but this is a more literal translation:

> 私はかぱんと炊飯器を開け  
>  I opened the rice cooker with a "kapan" sound.

A lot of onomatopoeic words are used this way and can be used adverbially.
Here are some more examples:

> 雨がザーザー降っている。  
>  It is raining with a "zaa zaa" sound.  
>  Natural translation: It is raining cats and dogs.

> ばたんと閉める。  
>  To shut with a bang.

> ぐつぐつ（と）煮る。  
>  To simmer.

