Why use ないや instead of ない?


Not sure whether it's や or ないや that's the changed part anyone have more info
on using this?




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...)

