Where does “oest” come from?

oest (Middle Dutch) comes from Old French aoust, from Vulgar Latin agustus, from Latin Augustus, from Proto-Indo-European h₂ewg-, from Proto-Indo-European h₂weg-, from Proto-Indo-European h₂ug-.

Ancestry of “oest”, step by step

oest traces back through two separate lines of ancestry.

via Old French aoust

StepLanguageWordMeaning
1Old FrenchaoustAugust
2Vulgar Latinagustus—
3LatinAugustusvenerable
4Proto-Indo-Europeanh₂ewg-to increase, to enlarge
5Proto-Indo-Europeanh₂weg-to increase, to enlarge
6Proto-Indo-Europeanh₂ug-—

via Romansch uost

StepLanguageWordMeaning
1Romanschuost—
2Old Dutchōst—
3Old Norseaustreast
4Proto-Germanicaustrąeast; east, eastward
5Proto-Germanicaustrazeast, eastern
6Proto-Indo-European*h₂éwsterosin the direction of dawn, east

Words derived from “oest”

Every word from Proto-Indo-European h₂ug- →Every word from Proto-Indo-European h₂weg- →Every word from Proto-Indo-European h₂ewg- →