[ kop-er-hed-iz-uh m ]
/ ˈkɒp ər hɛdˌɪz əm /


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 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for copperheadism