An Etymological Dictionary of the German Language/Annotated/hüpfen
hüpfen, verb, from the equivalent Middle High German hüpfen, hupfen, ‘to hop’; Old High German *hupfen is by chance not recorded; so too Anglo-Saxon *hyppan, whence Middle English hyppen. English to hip. Akin also to Modern High German and Middle High German hopfen, Anglo-Saxon hoppian, English to hop, Old Icelandic hoppa; Gothic *hupôn, *huppjan, are wanting. Upper German dialects besides hoppen, from Old High German *hoppôn (Old Teutonic *hubbôn). Anglo-Saxon hoppettan, ‘to hop,’ Middle High German *hopfzen, Modern High German hopsen, are differently formed.