concern
verb (used with object)
to relate to; be connected with; be of interest or importance to; affect.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Observe that I do not ask you what king you killed;—I am as careful on that matter as I am concerning the reasons for which I myself left my native Fatherland!
From Temporal Power by Marie Corelli