←
English cheap (cognate)
←
North Frisian kuup (cognate)
←
West Frisian keap (cognate)
←
Old High German kouf (inherited)
←
Icelandic kaup (cognate)
←
Icelandic kaupa (mention)
←
Low German kopen (cognate)
→
English cheap (cognate)
→
Estonian kaup (cognate)