Not sure whether it's や or ないや that's the changed part anyone have more info
on using this?
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2017-08-18T11:53:38.107
52451
2017-08-18T15:49:05.917
25465
question
grammar
Why use ないや instead of ない?
If it's Osaka dialect instead of New Tokyo dialect just spoken in Osaka, you
probably misheard ないんや{LHL} or なんや{LHL}？ (I'm not familiar with pitch pattern
of Kansai dialects, so I might have mixed some of them), which corresponds
with ないんだ{HL} and 何だ？ respectively.

The combination of ない and dialectal copula や is ungrammatical.

If it's really ないや{HL}, i.e ない with sentence ending particle や, it can't be an
Osaka dialect, which would be ないわ then.

Sentence ender や stands for casual feel in giving up something. e.g やっぱ…いいや
(No, thanks, after all...)
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2017-08-18T15:30:12.550
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2017-08-18T15:49:05.917
2017-08-18T15:49:05.917
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answer