411 REFERENCE · Wiktionary
Copperheadism
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
English
Etymology
From en Copperhead ism.
Noun
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en US historical The state of being a Copperhead; sympathy in the North for Southern secessionists during the American Civil War.
en 1988 James McPherson Battle Cry of Freedom 247 Oxford 2003 The project went nowhere, but it did plant seeds of copperheadism that germinated a couple of years later.