| koppeln | connect couple dock join link dead reckoning |
| Koppel | paddock coupler belt |
| koppen | climb belch |
| köpfeln | head |
| Oppeln | Opole |
| doppeln | double |
| hoppeln | hop |
| kuppeln | procure couple |
| keppeln | complain nag |
| kippeln | wobble tilt |
| ankoppeln | hook up |
| köpfen | behead decapitate top head |
| Doppel- | semi-detached |
| doppel- | double |
| moppen | mop |
| Doppel | doubles |
| Klöppel | clapper lace bobbin |
| doppelt | double |
| foppen | befool delude tease |
| poppen | fuck |