Where does “au” come from?

au (Alemannic German) comes from Old High German ouh, from Proto-West Germanic *auk, from Proto-Germanic auk, from Proto-Indo-European h₂ewg-, from Proto-Indo-European h₂weg-, from Proto-Indo-European h₂ug-.

au (Alemannic German): also, too

Definitions

  1. also, too

Ancestry of “au”, step by step

au traces back through two separate lines of ancestry.

via Old High German ouh

StepLanguageWordMeaning
1Old High Germanouhalso, too, as well
2Proto-West Germanic*aukalso, too
3Proto-Germanicaukalso, too; furthermore, in addition; and
4Proto-Indo-Europeanh₂ewg-to increase, to enlarge
5Proto-Indo-Europeanh₂weg-to increase, to enlarge
6Proto-Indo-Europeanh₂ug-—

via Middle High German ouwe

StepLanguageWordMeaning
1Middle High Germanouweterrain, landscape by water, in water, island;...
2Old High Germanouwa—
3Proto-West Germanicauwjufloodplain; meadow; island
4Proto-Germanicawjōfloodplain; meadow; island
5Proto-Germanicagwjō—
6Proto-Indo-Europeanh₂ékʷeh₂water
Every word from Proto-Indo-European h₂ug- →Every word from Proto-Indo-European h₂weg- →Every word from Proto-Indo-European h₂ewg- →
au — Etymology, Origin & Word History | Etymology Explorer