kia ahatia
1. what can be done, so what, what business is it of yours, what's it got to do with you, what does it matter, never mind - an idiom used to indicate a lack of interest by the speaker for the comments of another person because they are of little importance.
(Te Kōhure Textbook (Ed. 2): 115;)
I kī taurangi koe ka whakaaetia au kia haere ki te pikitia. Kia ahatia! Me noho koe ki te whakaoti i ō mahi mō te kura. / You promised that I would be allowed to go to the film. So what! You must stay and finish your homework.
Synonyms: hai aha!, hei aha koa, aua atu (rā)