Definition:
Named for the poisonous snake which gives no warning before it strikes, Copperheads were Northerners who opposed the American Civil War. Considered traitors by others in the North, they favored immediate peace with the Confederacy.
Pronunciation: kop-er-hed
Also Known As: Doughface: a Southern sympathizer in the years before the war.
Examples:
The most famous of the Copperheads was Clement L. Vallandigham of Ohio.


