| Direktflug | direct flight |
| Direktorium | board of directors |
| Direktion | administration department |
| Direktive | directive |
| Direktor | manager director headmaster principal senior vice president |
| Direktorin | headmistress director manager |
| Direktrice | manageress |
| direkt | direct |
| direktiv | directive |
| Erstflug | maiden flight |
| Gleitflug | glide gliding flight volplane power-off glide |
| Tiefflug | flyby |
| direktional | directional |
| Rektus | direct case |
| Rektum | rectum |
| erektil | erectile |
| rektal | rectal |
| Dialektologe | dialectologist |
| Defektivum | defective |
| dialektal | dialectal |