needless
adjective uk/ˈniːd.ləs/ us/ˈniːd.ləs/
C2 不必要的，完全不必的
completely unnecessary
needless worrying 不必要的担心
Idiom
needless to sayidiom C1 当然，不用说
as you would expect; added to, or used to introduce, a remark giving information that is expected and not surprising
Needless to say, he'll be off work for a while. 当然，他会暂停工作一段时间。