if two events, facts, or situations are unconnected, they are not related to each other in any way
The murders are probably unconnected.
Wolf's work is completely unconnected to the current study.
1. A man may acquire great knowledge of topics unconnected with his daily work, and yet get hardly any benefit or relief. 一个人可能会获得与其日常工作无关的某些课题的渊博知识，而没有从中得到什么实益或宽慰。