←
Proto-Germanic *sūraz (inherited)
←
Middle High German sūr (inherited)
←
Proto-West Germanic *sūr (inherited)
←
Old High German sūr (inherited)
←
Proto-Indo-European *súHros (derived)
←
Low German suur (cognate)
→
English Sauer (cognate)
→
Icelandic súr (cognate)
→
Luxembourgish sauer (cognate)
→
Latvian siers (cognate)
→
Norwegian Bokmål sur (cognate)
→
Norwegian Nynorsk sur (cognate)