Type Word Usage Old Germanic (Hypothetical) Meaning & History Germanic word meaning "to buy, to trade" [1] (related to Latin caupo). Related ItemsDetails Other Languages & Culturesceapian(Anglo-Saxon) copon(Old Dutch) koufon(Old High German) Surname DescendantsKäufer, Kaufer(German) Sources & References Orel, Vladimir. A Handbook of Germanic Etymology. Brill, 2003, page 211.