Where does “erg” come from?

erg (Old Frisian) comes from Proto-Germanic argaz, from Proto-Indo-European h₁ergʰ- — to go, move; to mount; to move, go.

Ancestry of “erg”, step by step

StepLanguageWordMeaning
1Proto-Germanicargazunmanly, cowardly, unworthy, indecent
2Proto-Indo-Europeanh₁ergʰ-to go, move; to mount; to move, go
Every word from Proto-Indo-European h₁ergʰ-Every word from Proto-Germanic argaz