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Is there any difference in meaning between these three structures? I think
they all roughly mean "whether or not" but are they interchangable? Examples
below:

> 両親は **賛成するかしないか** にかかわらず、僕は君と結婚します。

vs

> 明日 **来る来ない** にかかわらず、必ずわたしに電話してください。

vs

> 明日は仕事を **守れるかどうか** が不安だった。
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2018-01-25T13:02:34.803
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2018-01-26T10:35:23.753
2018-01-26T10:35:23.753
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question
grammar word-choice embedded-question
VかV-negか vs. V | V-neg vs. Vかどうか
All of the forms that you have listed have the same effective meaning and are
interchangeable, so long as they follow the proper context. Cross-searching
these examples on
[Weblio](https://thesaurus.weblio.jp/content/%E3%81%99%E3%82%8B%E3%81%97%E3%81%AA%E3%81%84),
they are pretty much all listed as synonyms, with some seemingly trivial usage
differences that I do not think will actually dissuade most speakers from
using them interchangeably.

> するかしないか standard colloquial
>
> するしない casual colloquial
>
> * * *
>
> するかどうか standard (spoken or written)
>
> するか否｛いな｝か formal (usually written); somewhat pedantic

To use as an example some advice once given by Master Yoda:

> 「やる」か、「やらない」かだけだ → OK
>
> 「やる」、「やらない」だけだ → OK
>
> 「やる」かどうかだけだ → a little strange (not quite casual enough)
>
> 「やる」か否かだけだ → strange (mixing formal with casual)

Finally, 「するのかしないのか、」or 「するのしないの、」 could be used to carry a separate nuance;
one of impatience and frustration; e.g. ‘So, are you going to do it or not!?’.

If someone has another take I will be happy to consider editing.
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2018-01-25T22:04:50.360
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2018-01-25T23:49:06.340
2020-06-17T08:18:27.500
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answer