←
Old English hǣlan (inherited)
←
Middle English helen (inherited)
←
West Frisian hielje (cognate)
←
Proto-Indo-European *koyl- (derived)
←
Saterland Frisian heila (cognate)
←
Saterland Frisian heilen (mention)
→
Japanese ヒール (borrowed)
→
Luxembourgish heelen (cognate)
→
Norwegian Nynorsk gro (link)