Where does “gak” come from?

gak (Danish) comes from Old Norse gakk, from English Jack, from Middle English jakke, from Anglo-Norman jacke, from Middle French jaque, from Middle French jacques, from French jacques, from Latin Iacobus — heel of the foot; heel.

gak (Danish): bats, nuts; madness, insanity; imperative of gå

Definitions

  1. bats, nuts; madness, insanity; imperative of gå

Ancestry of “gak”, step by step

gak traces back through two separate lines of ancestry.

via Old Norse gakk

StepLanguageWordMeaning
1Old Norsegakksecond-person singular imperative active of ganga
2EnglishJackA placeholder or conventional name for any man,...
3Middle EnglishjakkeA padded coat, especially as light armour
4Anglo-Normanjacke
5Middle Frenchjaque
6Middle Frenchjacques
7Frenchjacquesplural of jacque; a stupid person; a jemmy or...
8LatinIacobusJacob; James; Saint James
9Ancient GreekἸάκωβος
10Ancient GreekἸακώβJacob
11HebrewיַעֲקֹבJacob
12Hebrewעָקֵבheel of the foot; heel

via Danish gaga

StepLanguageWordMeaning
1Danishgagagaga
2Frenchgagagaga (senile)
3Frenchgâterto spoil, ruin; to go bad, go off
4Middle Frenchgasterto waste; to destroy
5Old Frenchgasterto waste; to destroy
6LatinvastusEmpty, unoccupied, i.e. waste, desert; Desolate,...
7Proto-Celticwāstosempty
8Proto-Indo-Europeanh₁weh₂-to leave, abandon, give out
Every word from Hebrew עָקֵבEvery word from Hebrew יַעֲקֹבEvery word from Ancient Greek Ἰακώβ