| klopf klopf | knock-knock |
| Klopfholz | mallet |
| Flipflops | thong |
| Flipflop | flip-flop |
| Blondkopf | blond |
| Kopf an Kopf | neck and neck |
| Löwenkopf | Lion's Head |
| Klappertopf | rattle |
| Knopfloch | buttonhole |
| Kopf hoch | cheer up chin up |
| kopflos | headless |
| pro Kopf | per capita |
| Klopfbank | hammer bench |
| Klopfen | knock |
| klopfen | knock beat tap thump |
| Klopfgeist | poltergeist |
| Kochklopse | Königsberger Klopse |
| Kyklop | cyclops |
| Klopfer | door knocker carpet beater |
| Kloppe | a kind of |