> どうってことありません。

I know it means "It was nothing."

But, what is どうって?
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2021-03-04T07:57:00.457
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2022-03-10T01:40:26.673
2022-03-10T01:40:26.673
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question
expressions set-phrases spoken-language
What is どうって in どうってことありません?
* どうってことない
  * どうってことありません
  * どうと言うこともない
  * etc.

are all variations of a set phrase meaning "it's nothing" "it's no big deal".
Here どう is just the usual question word and って or と the usual quoting
particle. Literally the phrase means that it is not something you would
ask/enquire about by saying どう.
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2021-03-04T08:35:09.223
84441
2021-03-04T08:35:09.223
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answer