immaterial

你的个人意见对这个项目完全不重要。

Your personal opinion is completely ___immaterial to this project.

在决定项目优先级时，这类细节问题根本不重要。

When prioritizing projects, such details are completely ___immaterial.

佛教教导我们，真正的幸福在于追求非物质的精神满足。

Buddhism teaches us that true happiness lies in pursuing ___immaterial spiritual fulfillment.