Copperheadism
[ kop-er-hed-iz-uh m ]
/ ˈkɒp ər hɛdˌɪz əm /
noun
U.S. History.
(during the Civil War) the advocacy of peace negotiations to restore the Union to its prewar condition, with continued slavery in the South.
Origin of Copperheadism
An Americanism dating back to 1860–65;
copperhead +
-ism