←
Old English þearm (inherited)
←
Middle Dutch darm (cognate)
←
Middle Dutch daerm (mention)
←
Middle Dutch derm (mention)
←
Middle High German darm (cognate)
←
Middle Low German darm (cognate)
←
Ancient Greek τόρμος (cognate)
←
Old Frisian therm (cognate)
→
English tharm (inherited)