| doppeln | double |
| Doppelname | double name |
| Doppel- | semi-detached |
| doppel- | double |
| Doppel | doubles |
| doppelt | double |
| Oppeln | Opole |
| hoppeln | hop |
| koppeln | connect couple dock join link dead reckoning |
| Doppelte | double |
| Doppelung | doubling |
| dopen | dope |
| moppen | mop |
| Koppel | paddock coupler belt |
| foppen | befool delude tease |
| koppen | climb belch |
| poppen | fuck |
| Päppeln | nurture |
| kuppeln | procure couple |
| Düppel | chaff |