Code point
U+208B
Glyph appearance depends on your fonts.
U+208B
Sm<sub> 2212U+208B SUBSCRIPT MINUS is a Unicode 16.0.0 character in the Math Symbol category. It belongs to the Superscripts and Subscripts block.
Choose the representation you need, then copy its value.
U+208B
8331
₋
₋
E2 82 8B
208B
0000208B
%E2%82%8B
\u208B
\u208B
\u208B
\208B