Etymograph > Indo-European > Old Norse > Rules > on-u-umlaut

last syllable contains 'u' and third to last syllable contains stressed vowel:
last syllable contains 'u':
otherwise:

Referencing rules

on-acc
on-dat
on-gen
on-nom-pl
on-acc-pl
on-dat-pl
on-pres-1pl
on-past-1pl
on-past-2pl
on-past-3pl
on-adj-strong-dat-sg-m
on-adj-strong-dat-sg-n
on-adj-weak-nom-pl
on-adj-weak-acc-sg-f
on-adj-weak-dat-sg-f
on-adj-weak-dat-pl
on-adj-weak-gen-sg-f
on-adj-weak-gen-pl