hei aha (koa/noa iho) Play
1. be that as it may, nevertheless, what for, what does it matter? so what? anyway, no matter - an idiom indicating that there is nothing to worry about or that there is no point in pursuing a particular activity.
Ai! I wareware i a au taku pukapuka. Hei aha koa. Kei a au tāku. / Heck! I've forgotten my book. It doesn't matter. I have mine.
See also hei aha (noa iho)