1. stab-in-the-back myth - Noun
2. Stab-in-the-back myth - Proper noun
stab-in-the-back myth
(historical) The Dolchstoßlegende: a widespread historical myth in right-wing circles in Germany after 1918, that Germany's armies did not lose World War I on the battlefield but were betrayed by civilian leaders.
stab-in-the-back myth (plural stab-in-the-back myths)
(by extension) Any denialist myth misattributing failure to internal betrayal.