←
Old English þearm (inherited)
←
Middle English tharm (inherited)
←
Middle English therm (mention)
←
North Frisian teerm (cognate)
←
West Frisian term (cognate)
←
Proto-Germanic *þarmaz (inherited)
←
Proto-West Germanic *þarm (inherited)
←
Ancient Greek τράμις (cognate)
←
Ancient Greek τόρμος (mention)
←
Proto-Indo-European *tórmos (derived)
←
Proto-Indo-European *ter- (derived)
→
Luxembourgish Daarm (cognate)