←
English adder (cognate)
←
Proto-Germanic *utraz (inherited)
←
Old High German otter (inherited)
←
Old High German nātara (derived)
←
Proto-Indo-European *udrós (inherited)
→
English otter (cognate)
→
English adder (mention)
→
Luxembourgish Adder (cognate)
→
German Low German Adder (cognate)
→
Saterland Frisian Otter (cognate)