Etymograph > Indo-European > Proto-West Germanic > Rules > pwgmc-unstressed-diphthongs

From Proto-Germanic to Proto-West Germanic

Source: Ringe 2014:60, Hogg 2011:3.33

au > ō if sound is non-stressed

Examples

FromToGlossStepsExpected
PGmc *sunauz*sunōson.gensunauz > sunau > sunō
PGmc *ahtauOE eahtaeightahtau > ahtō > eahta

ōu > ō if sound is non-stressed

Examples

FromToGlossStepsExpected
PGmc *ahtōu*ahtōeightahtōu > ahtō

Sequences

pgmc-to-pwgmc: previous pwgmc-shorten-before-final-r, next pwgmc-w-after-stressed-vowel-before-u
pgmc-to-oe: previous pwgmc-shorten-before-final-r, next pwgmc-w-after-stressed-vowel-before-u
pnwgmc-to-pwgmc: previous pwgmc-shorten-before-final-r, next pwgmc-w-after-stressed-vowel-before-u
pnwgmc-to-oe: previous pwgmc-shorten-before-final-r, next pwgmc-w-after-stressed-vowel-before-u