Where does “Dolchstoßlüge” come from?

Dolchstoßlüge (German) comes from German Lüge, from Middle High German lüge, from Old High German lugī, from Proto-Germanic lugiz, from Proto-Indo-European lewgʰ- — to lie, to tell falsehood.

Ancestry of “Dolchstoßlüge”, step by step

Dolchstoßlüge traces back through two separate lines of ancestry.

via German Lüge

StepLanguageWordMeaning
1GermanLügelie
2Middle High Germanlüge—
3Old High Germanlugī—
4Proto-Germaniclugizlie, falsehood
5Proto-Indo-Europeanlewgʰ-to lie, to tell falsehood

via German Dolchstoß

StepLanguageWordMeaning
1GermanDolchstoßstab in the back
2GermanDolchdagger
3Latindolōto hew, chop into shape
4Ancient Greekδόλοςtrick, deceit; wiles; bait
Every word from Proto-Indo-European lewgʰ- →Every word from Proto-Germanic lugiz →Every word from Old High German lugī →