←
West Frisian wjirm (cognate)
←
Proto-Germanic *wurmiz (inherited)
←
Middle High German wurm (inherited)
←
Old High German wurm (inherited)
←
Proto-Indo-European *wr̥mis (inherited)
→
Old English wyrm (cognate)
→
Cimbrian bórm (cognate)
→
Cimbrian burm (cognate)
→
Luxembourgish Wuerm (cognate)
→
Swedish vurm (borrowed)