pointless
adjective uk/ˈpɔɪnt.ləs/ us/ˈpɔɪnt.ləs/
C1 无意义的，空洞的
Something that is pointless has no purpose, and it is a waste of time doing it.
This is a pointless exercise. 这个练习毫无意义。
It seemed pointless to continue. 继续下去看来没有意义。
informal It's pointless arguing with him. 和他争辩是白费口舌。