(ˈ) ̷ ̷| ̷ ̷ adverb
Etymology: Middle English wherin, from where, wher where + in
1. : in what : in what particular or regard
wherein consists the peculiarity in the connotation of a relative name — J.S.Mill
2.
a. : in which : where
citizens of the United States and of the State wherein they reside — U.S. Constitution
b. : in the course of or during which
a period wherein he took no active part in politics
3. : in regard to which
a controversy wherein he took a prominent part
4. obsolete : in whatever regard
wherein our entertainment shall shame us we will be justified in our loves — Shakespeare